@articleGlöckner_Willis_2021, title=Decompositions of locally compact contraction groups, series and extensions, volume=570, DOI=https://doi.org/10.1016/j.jalgebra.2020.11.007, journal=Journal of Algebra, author=Glöckner, Helge and Willis, George A., year=2021, pages=164–214 

@articleKirschmer_Rüther_2017, title=The constructive membership problem for discrete two-generator subgroups of SL(2,R), volume=480, DOI=10.1016/j.jalgebra.2017.02.029, journal=Journal of Algebra, publisher=Elsevier BV, author=Kirschmer, Markus and Rüther, Marion G., year=2017, pages=519–548 

@articleKlüners_Pauli_2005, title=Computing residue class rings and Picard groups of orders, volume=292, DOI=10.1016/j.jalgebra.2005.04.013, number=1, journal=Journal of Algebra, publisher=Elsevier BV, author=Klüners, Jürgen and Pauli, Sebastian, year=2005, pages=47–64