@article{MOMA_1972__76_177621,
     author = {Baidyanath Ray},
     title = {On {Simultaneous} {Fixed} {Points} of {Multi-Valued} {Maps.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {448--454},
     publisher = {mathdoc},
     volume = {76},
     year = {1972},
     zbl = {0248.54054},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1972__76_177621/}
}