@article{JRAM_1981__321_152318, author = {A.M. Odlyzko and N.J.A. Sloane}, title = {On expections of integral quadratic forms.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {212--216}, publisher = {mathdoc}, volume = {321}, year = {1981}, zbl = {0439.10015}, url = {http://geodesic.mathdoc.fr/item/JRAM_1981__321_152318/} }