@article{1103859288,
author = {K\"uhn, J. and Seiler, E.},
title = {Light cone expansion and four point function},
journal = {Comm. Math. Phys.},
volume = {29},
number = {1},
year = {1973},
pages = { 253-257},
language = {en},
url = {http://dml.mathdoc.fr/item/1103859288}
}
Kühn, J.; Seiler, E. Light cone expansion and four point function. Comm. Math. Phys., Tome 29 (1973) no. 1, pp. 253-257. http://gdmltest.u-ga.fr/item/1103859288/