@article{CMH_1962__37_139261,
     author = {Kurt Egg},
     title = {\"Uber eine {Kontinuit\"atsgleichung.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {241--265},
     publisher = {mathdoc},
     volume = {37},
     year = {1962},
     url = {http://geodesic.mathdoc.fr/item/CMH_1962__37_139261/}
}