@article{MOMA_1970__74_177514,
     author = {N.C. Manna},
     title = {On {Dini} {Derivatives} and on a {Property} of {Denjoy.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {323--329},
     publisher = {mathdoc},
     volume = {74},
     year = {1970},
     zbl = {0226.26007},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1970__74_177514/}
}