@article{700617,
     title = {On singlevaluedness and continuity of monotone mappings},
     booktitle = {General topology and its relations to modern analysis and algebra IV},
     series = {GDML\_Books},
     publisher = {Society of Czechoslovak Mathematicians and Physicist},
     address = {Praha},
     year = {1977},
     pages = {116-118},
     mrnumber = {MR0463980},
     zbl = {0369.47028},
     url = {http://dml.mathdoc.fr/item/700617}
}

Fabian, M. On singlevaluedness and continuity of monotone mappings, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. 116-118. http://gdmltest.u-ga.fr/item/700617/