@article{700714,
     title = {On two theorems of V. V. Filippov},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1972},
     pages = {307-308},
     mrnumber = {MR0370474},
     zbl = {0308.54008},
     url = {http://dml.mathdoc.fr/item/700714}
}

Michael, E. On two theorems of V. V. Filippov, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1972), pp. 307-308. http://gdmltest.u-ga.fr/item/700714/