On additive generalisation of Voronoi's theory of perfect forms over algebraic number fields
Leibak, Alar
2006
https://www.ester.ee/record=b2208763*est
Some classes of finite 2-groups and their endomorphism semigroups = Mõnedest lõplike 2-rühmade klassidest ja nende endomorfismipoolrühmadest
Tamberg, Tatjana
2012
https://www.ester.ee/record=b2756572*est