@article{10_4064_cm_25_1_105_111,
     author = {S. N. Mukhopadhyay},
     title = {On {Dini} derivatives and on certain classes of {Zahorski}},
     journal = {Colloquium Mathematicum},
     pages = {105--111},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {1972},
     doi = {10.4064/cm-25-1-105-111},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-25-1-105-111/}
}