GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%1%%2%W aclib.bib ac lib documentation Bettina Eick3%W Karel Dekimpe4%%56@book{KD,7author = "Karel Dekimpe",8title = "Almost-Bieberbach Groups: Affine and Polynomial Structures",9series = "Lecture Notes in Mathematics",10volume = "1639",11publisher = "Springer-Verlag, Heidelberg",12year = "1996",13}1415@article{AUS,16author = "Louis Auslander",17title = "Bieberbach's theorem on space groups and discrete uniform18subgroups of Lie groups",19journal = "Ann. of Math",20number = "3",21volume = "71",22year = "1960",23pages ="579-590"24}2526@book{BRO,27author = "Kenneth S.\ Brown",28title = "Cohomology of Groups",29volume = "87",30series = "Grad. Texts in Math.",31year = "1982",32publisher = "Springer-Verlag, New York"33}3435@article{LEE,36author = "Kyung Bai Lee",37title = "There are only finitely many infra-nilmanifolds under38each nilmanifold",39journal = "Quart. J. Math. Oxford",40number = "2",41volume = "39",42year = "1988",43pages ="61--66"44}4546@article{DM,47author = "An Descheemaeker and Wim Malfait",48title = "{$P$}-localization of Relative Groups",49journal = "Journal of Pure and Applied Algebra",50volume = "159",51number = "1",52year = "2001"53}5455@article{DE1,56author = "Karel Dekimpe and Bettina Eick",57title = "Computations with almost crystallographic groups",58journal = "Submitted",59year = "2001" }6061@article{DE2,62author = "Karel Dekimpe and Bettina Eick",63title = "Computational aspects of group extensions and their64application in topology",65journal = "Submitted",66year = "2001" }67686970