Geometry of some simple nonlinear differential operators
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 4, Volume 13 (1986) no. 2, p. 299-346
@article{ASNSP_1986_4_13_2_299_0,
author = {Mc Kean, Henry and Scovel, J. C.},
title = {Geometry of some simple nonlinear differential operators},
journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
publisher = {Scuola normale superiore},
volume = {Ser. 4, 13},
number = {2},
year = {1986},
pages = {299-346},
zbl = {0648.47048},
mrnumber = {876127},
language = {en},
url = {http://www.numdam.org/item/ASNSP_1986_4_13_2_299_0}
}

Mc Kean, H. P.; Scovel, J. C. Geometry of some simple nonlinear differential operators. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 4, Volume 13 (1986) no. 2, pp. 299-346. http://www.numdam.org/item/ASNSP_1986_4_13_2_299_0/

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