@article{GDZPPN00240382X, title = {Multiple Integrals Related to Electron Collision Problems.}, journal = {Mathematische Zeitschrift}, volume = {105}, year = {1968}, pages = {191-196}, zbl = {0181.18002}, url = {http://dml.mathdoc.fr/item/GDZPPN00240382X} }
Cohen, Moses E. Multiple Integrals Related to Electron Collision Problems.. Mathematische Zeitschrift, Tome 105 (1968) pp. 191-196. http://gdmltest.u-ga.fr/item/GDZPPN00240382X/