GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
\backcite {AHU:74}{{6}{1}{chapter.1}}
\backcite {AMORE:95}{{6}{1}{chapter.1}}
\backcite {KoutsofiosNorth:2002}{{6}{1}{chapter.1}}
\backcite {AMORE:95}{{32}{5.1.5}{subsection.5.1.5}}
\backcite {AHU:74}{{32}{5.2}{section.5.2}}
\backcite {HU:69}{{32}{5.2}{section.5.2}}
\backcite {AMORE:95}{{32}{5.2}{section.5.2}}
\backcite {KoutsofiosNorth:2002}{{44}{B}{appendix.B}}
\backcite {MSW:2001}{{48}{C}{appendix.C}}
\backcite {KM:2002}{{48}{C}{appendix.C}}
\backcite {KM:2002}{{50}{C.2}{section.C.2}}