@article{10_4153_CMB_1996_002_6,
     author = {Bullen, P. S. and Sarkhel, D. N.},
     title = {A {Continuity-Like} {Property} of {Derivatives}},
     journal = {Canadian mathematical bulletin},
     pages = {10--20},
     year = {1996},
     volume = {39},
     number = {1},
     doi = {10.4153/CMB-1996-002-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1996-002-6/}
}