@article{1102983309,
author = {Lane, N. D. and Singh, K. D.},
title = {Strong cyclic, parabolic and conical differentiability.},
journal = {Pacific J. Math.},
volume = {31},
number = {3},
year = {1969},
pages = { 583-597},
language = {en},
url = {http://dml.mathdoc.fr/item/1102983309}
}
Lane, N. D.; Singh, K. D. Strong cyclic, parabolic and conical differentiability.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 583-597. http://gdmltest.u-ga.fr/item/1102983309/