@article{700739,
     title = {A general fixed point theorem},
     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 = {451-453},
     mrnumber = {MR0375277},
     zbl = {0373.54037},
     url = {http://dml.mathdoc.fr/item/700739}
}

Wattel, E. A general fixed point theorem, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1972), pp. 451-453. http://gdmltest.u-ga.fr/item/700739/