TY - JOUR AU - Adam Piskorek TI - On Janmann-Zaremba time derivative JO - Mathematica Applicanda PY - 1995 SP - 51 EP - 80 VL - 24 IS - 38 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/ma.v24i38.1834/ DO - 10.14708/ma.v24i38.1834 LA - pl ID - 10_14708_ma_v24i38_1834 ER -