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<entry id="AutoDoc"><manual>
  <author>
    <name><first>Sebastian</first><last>Gutsche</last></name>
    <name><first>Max</first><last>Horn</last></name>
  </author>
  <title><C>AutoDoc - Generate documentation from GAP source code (Version 2017.09.15)</C></title>
  <year>2017</year>
  <other type="note">
    GAP package, <URL>https://github.com/gap-packages/AutoDoc</URL>
  </other>
</manual></entry>

<entry id="GAPDoc"><manual>
  <author>
    <name><first>Frank</first><last>Lübeck</last></name>
    <name><first>Max</first><last>Neunhöffer</last></name>
  </author>
  <title><C>GAPDoc (version 1.6)</C></title>
  <organization>RWTH Aachen</organization>
  <year>2017</year>
  <other type="note">
    GAP package, 
    <URL>http://www.math.rwth-aachen.de/~Frank.Luebeck/GAPDoc/index.html</URL>
  </other>
</manual></entry>

<entry id="GitHubPagesForGAP"><manual>
  <author>
    <name><first>Max</first><last>Horn</last></name>
  </author>
  <title>
    <C>GitHubPagesForGAP - a GitHub Pages generator for GAP packages</C> 
  </title>
  <year>2017</year>
  <volume>0.2</volume> 
  <other type="note">
    GAP package, <URL>https://gap-system.github.io/GitHubPagesForGAP/</URL>
  </other>
</manual></entry>

<entry id="alp3"><manual> 
  <author> 
    <name><first>M.</first><last>Alp</last></name>             
    <name><first>A.</first><last>Odabas</last></name> 
    <name><first>E. O.</first><last>Uslu</last></name> 
    <name><first>C. D.</first><last>Wensley</last></name> 
  </author>
  <title><C>XMod: Crossed Modules and Cat1-groups in GAP</C></title> 
  <volume>2.63</volume> 
  <year>2017</year> 
  <other type="note">
    GAP package,
    <URL>https://gap-packages.github.io/xmod/</URL> 
  </other>
</manual></entry> 

<entry id="alp2"><article>
  <author>
    <name><first>M.</first><last>Alp</last></name>
    <name><first>C. D.</first><last>Wensley</last></name>
  </author>  
  <title>Enumeration of cat1-groups of low order</title>
  <journal>Int. J. Algebra and Computation</journal>
  <year>2000</year>
  <volume>10</volume>
  <pages>407--424</pages>
</article></entry>

<entry id="arvasi2"><article>
  <author> 
    <name><first>Z.</first><last>Arvasi</last></name> 
    <name><first>T.</first><last>Porter</last></name> 
  </author>
  <title>
    Simplicial and Crossed Resolutions of Commutative Algebras 
  </title>
  <journal>J. Algebra</journal> 
  <volume>181</volume> 
  <pages>426--448</pages> 
  <year>1996</year> 
</article></entry>

<entry id="arvasi3"><article>
  <author> 
    <name><first>Z.</first><last>Arvasi</last></name> 
    <name><first>T.</first><last>Porter</last></name> 
  </author>
  <title>
    Freeness Conditions for <M>2</M>-Crossed Modules of Commutative Algebras 
  </title> 
  <journal>Applied Categorical Structures</journal> 
  <volume>6</volume> 
  <pages>455--471</pages> 
  <year>1998</year> 
</article></entry>

<entry id="arvasi4"><article>
  <author> 
    <name><first>Z.</first><last>Arvasi</last></name> 
    <name><first>U.</first><last>Ege</last></name> 
  </author>
  <title>Annihilators, multipliers and crossed modules</title> 
  <journal>Applied Categorical Structures</journal> 
  <volume>11</volume> 
  <pages>487--506</pages> 
  <year>2003</year> 
</article></entry>

<entry id="arvasi_odabas"><article>
  <author> 
    <name><first>Z.</first><last>Arvasi</last></name> 
    <name><first>A.</first><last>Odabas</last></name> 
  </author>
  <title>Computing 2-Dimensional Algebras: Crossed Modules and Cat1-algebras</title> 
  <journal>Journal of Algebra and Its Applications</journal> 
  <volume>15</volume> 
  <pages>1650185 (12 pages)</pages> 
  <year>2016</year> 
</article></entry>

<entry id="brown1"><inproceedings>
  <author> 
    <name><first>R.</first><last>Brown</last></name> 
  </author>
  <booktitle>Low Dimensional Topology</booktitle> 
  <title>Higher Dimensional Group Theory</title> 
  <series>London Math. Soc. Lecture Note Series</series> 
  <volume>48</volume> 
  <publisher>London Mathematical Society</publisher> 
  <year>1982</year> 
</inproceedings></entry>

<entry id="brown2"><article>
  <author> 
    <name><first>R.</first><last>Brown</last></name> 
  </author>
  <title>From groups to groupoids: a brief survey</title> 
  <journal>Bull. London Math. Soc.</journal> 
  <volume>19</volume> 
  <pages>113--134</pages> 
  <year>1987</year> 
</article></entry>

<entry id="ellis1"><article>
  <author> 
    <name><first>G. J.</first><last>Ellis</last></name> 
  </author>
  <title>Higher Dimensional Crossed Modules of Algebras</title> 
  <journal>J. Pure and Appl. Algebra</journal> 
  <volume>52</volume> 
  <pages>277--282</pages> 
  <year>1988</year> 
</article></entry>

<entry id="loday"><article>
  <author> 
    <name><first>J.-L.</first><last>Loday</last></name> 
  </author>
  <title>Spaces with finitely many non-trivial homotopy groups</title> 
  <journal>J. App. Algebra</journal> 
  <volume>24</volume> 
  <pages>179--202</pages> 
  <year>1982</year> 
</article></entry>

<entry id="mosa"><phdthesis>
  <author> 
    <name><first>G. H.</first><last>Mosa</last></name> 
  </author>
  <title>Higher dimensional algebroids and crossed complexes</title> 
  <school>University of Wales, Bangor (U.K.)</school>  
  <year>1986</year> 
  <type>Ph.D. thesis</type>
</phdthesis></entry>

<entry id="aodabas1"><phdthesis> 
  <author> 
    <name><first>A.</first><last>Odabas</last></name> 
  </author>
  <title>Crossed Modules of Algebras with GAP</title> 
  <year>2009</year> 
  <school>Osmangazi University, Eskisehir</school> 
  <type>Ph.D. thesis</type>
</phdthesis></entry>

<entry id="porter1"><article>
  <author> 
    <name><first>T.</first><last>Porter</last></name> 
  </author>
  <title>Some categorical results in the theory of crossed modules in commutative algebras</title> 
  <journal>J. Algebra</journal> 
  <volume>109</volume> 
  <pages>415--429</pages> 
  <year>1987</year> 
</article></entry>

<entry id="whitehead"><article>
  <author>
    <name><first>J. H. C.</first><last>Whitehead</last></name>
  </author>  
  <title>Combinatorial homotopy <C>I</C><C>I</C></title>
  <journal>Bull. Amer. Math. Soc.</journal>
  <year>1949</year>
  <volume>55</volume>
  <pages>453--496</pages>
</article></entry> 

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