@article{10_4064_fm_67_3_279_284,
     author = {S. Mukhopadhyay},
     title = {On a certain property of the derivative},
     journal = {Fundamenta Mathematicae},
     pages = {279--284},
     year = {1970},
     volume = {67},
     number = {3},
     doi = {10.4064/fm-67-3-279-284},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-67-3-279-284/}
}