@article{RCP25_1977__24__196_0,
     author = {Velo, Giorgio},
     title = {Non {Linear} {Relativistic} {Field} {Equations}},
     journal = {Les rencontres physiciens-math\'ematiciens de Strasbourg -RCP25},
     note = {talk:6},
     pages = {196--208},
     publisher = {Institut de Recherche Math\'ematique Avanc\'ee - Universit\'e Louis Pasteur},
     volume = {24},
     year = {1977},
     language = {en},
     url = {http://www.numdam.org/item/RCP25_1977__24__196_0/}
}