TY - JOUR AU - J. Górowski AU - K. Wachnicka TI - The fundamental formula for the operator \((∆\pm c^2)^p\) and its application JO - Commentationes Mathematicae PY - 1984 SP - 263 EP - 268 VL - 24 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v24i2.6098/ DO - 10.14708/cm.v24i2.6098 LA - pl ID - 10_14708_cm_v24i2_6098 ER -