Quasiregular mappings and metrics on the n-sphere with punctures. Seppo Rickman — 1984 Commentarii mathematici Helvetici
Quasiregular mappings of the Heisenberg group. Ilkka Holopainen; Seppo Rickman — 1992 Mathematische Annalen
A Picard type theorem for quasiregular mappings of R into n-manifolds with many ends. Ilkka Holopainen; Seppo Rickman — 1992 Revista Matemática Iberoamericana
Nonremovable Cantor sets for bounded quasiregular mappings. Rickman, Seppo — 1995 Annales Academiae Scientiarum Fennicae. Series A I. Mathematica
Defect relation and its realization for quasiregular mappings. Rickman, Seppo — 1995 Annales Academiae Scientiarum Fennicae. Series A I. Mathematica
Simply connected quasiregularly elliptic 4-manifolds. Rickman, Seppo — 2006 Annales Academiae Scientiarum Fennicae. Mathematica