@article{SLSEDP_2019-2020____A3_0,
     author = {Christian G\'erard and Micha{\l} Wrochna},
     title = {The {Feynman} problem for the {Klein{\textendash}Gordon} equation},
     journal = {S\'eminaire Laurent Schwartz {\textemdash} EDP et applications},
     note = {talk:4},
     pages = {1--10},
     publisher = {Institut des hautes \'etudes scientifiques & Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
     year = {2019-2020},
     doi = {10.5802/slsedp.140},
     zbl = {1450.83003},
     language = {en},
     url = {https://proceedings.centre-mersenne.org/articles/10.5802/slsedp.140/}
}