1. Non hopfian groups with fully invariant kernels;Anshel;J. Algebra,1973
2. Some two generator one relator non hopfian groups;Baumslag;Bull. Amer. Math. Soc.,1962
3. Dehn's algorithm for the word problem;Greendlinger;Comm. Pure Appl. Math.,1960
4. The problem of conjugacy and coincidence with an anticenter in the theory of groups;Greendlinger;Sibirsk. Mat. Z.,1966
5. Solution by means of Dehn's generalized algorithm of the conjugacy problem for a class of finitely presented groups which coincide with their anticenter;Greendlinger;Dokl. Akad. Nauk SSSR,1964