TY - JOUR AU - Finston, David AU - Maubach, Stefan TI - Constructing (Almost) Rigid Rings and a UFD Having Infinitely Generated Derksen and Makar-Limanov Invariants JO - Canadian mathematical bulletin PY - 2010 SP - 77 EP - 86 VL - 53 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2010-017-8/ DO - 10.4153/CMB-2010-017-8 ID - 10_4153_CMB_2010_017_8 ER -