@article{10_4153_CJM_1972_058_0,
     author = {Schirmer, Helga},
     title = {\ensuremath{\delta}-Continuous {Selections} of {Small} {Multifunction}},
     journal = {Canadian journal of mathematics},
     pages = {631--635},
     year = {1972},
     volume = {24},
     number = {4},
     doi = {10.4153/CJM-1972-058-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1972-058-0/}
}