%0 Journal Article %A De Mottoni, P. %A Salusti, E. %T On a differential equation approach to quantum field theory : causality property for the solutions of Thirring's model %J Annales de l'institut Henri Poincaré. Section A, Physique Théorique %D 1971 %P 351-360 %V 15 %N 4 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPA_1971__15_4_351_0/ %G en %F AIHPA_1971__15_4_351_0