@article{10_14708_cm_v24i2_6098,
     author = {J. G\'orowski and K. Wachnicka},
     title = {The fundamental formula for the operator {\((\ensuremath{\Delta}\pm} c^2)^p\) and its application},
     journal = {Commentationes Mathematicae},
     pages = { 263--268},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1984},
     doi = {10.14708/cm.v24i2.6098},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v24i2.6098/}
}