On restricted derivative approximation
Compositio Mathematica, Tome 74 (1990) no. 3, pp. 327-331.
@article{CM_1990__74_3_327_0,
author = {Yang, Zi-Xiao and Li, Bu-Xi},
title = {On restricted derivative approximation},
journal = {Compositio Mathematica},
pages = {327--331},
volume = {74},
number = {3},
year = {1990},
zbl = {0697.41002},
mrnumber = {1055699},
language = {en},
url = {http://www.numdam.org/item/CM_1990__74_3_327_0/}
}
Yang, Zi-Xiao; Li, Bu-Xi. On restricted derivative approximation. Compositio Mathematica, Tome 74 (1990) no. 3, pp. 327-331. http://www.numdam.org/item/CM_1990__74_3_327_0/

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