Lindelöf theorems for monotone Sobolev functions. Futamura, Toshihide; Mizuta, Yoshihiro — 2003 Annales Academiae Scientiarum Fennicae. Mathematica
Sobolev embeddings for variable exponent Riesz potentials on metric spaces. Futamura, Toshihide; Mizuta, Yoshihiro; Shimomura, Tetsu — 2006 Annales Academiae Scientiarum Fennicae. Mathematica