TY  - JOUR
AU  - J. Appel
TI  - Upper estimates for superposition operators and some applications
JO  - Annales Fennici Mathematici
PY  - 1983
SP  - 149
EP  - 159
VL  - 8
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1983.0803/
DO  - 10.5186/aasfm.1983.0803
LA  - en
ID  - AFM_1983_8_1_a8
ER  -