@article{CM_1989__69_1_111_0,
     author = {Ditzian, Z.},
     title = {The laplacian and the discrete laplacian},
     journal = {Compositio Mathematica},
     pages = {111--120},
     publisher = {Kluwer Academic Publishers},
     volume = {69},
     number = {1},
     year = {1989},
     mrnumber = {986815},
     zbl = {0738.35015},
     language = {en},
     url = {http://www.numdam.org/item/CM_1989__69_1_111_0/}
}