@article{10_4153_CMB_2010_017_8,
     author = {Finston, David and Maubach, Stefan},
     title = {Constructing {(Almost)} {Rigid} {Rings} and a {UFD} {Having} {Infinitely} {Generated} {Derksen} and {Makar-Limanov} {Invariants}},
     journal = {Canadian mathematical bulletin},
     pages = {77--86},
     year = {2010},
     volume = {53},
     number = {1},
     doi = {10.4153/CMB-2010-017-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2010-017-8/}
}