@article{CMUC_2001__42_2_a9,
     author = {Svetic, R. E.},
     title = {The {Laplace} derivative},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {331--343},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2001},
     mrnumber = {1832151},
     zbl = {1051.26004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2001__42_2_a9/}
}