Topological and metric properties of quasiregular mappings

O. Martio, S. Rickman, J. Väisälä
1971 Annales Academiae Scientiarum Fennicae Series A I Mathematica  
doi:10.5186/aasfm.1971.488 fatcat:sn6yteqncrdbfbuiyc5yvh3vym