On a variant in the theory of characteristics for systems of first order partial differential equations
Matematički vesnik, Tome 19 (1967) no. 3, p. 329
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35F50
B. N. Rachajsky. On a variant in the theory of characteristics for systems of first order partial differential equations. Matematički vesnik, Tome 19 (1967) no. 3, p. 329 . http://geodesic.mathdoc.fr/item/MV_1967_19_3_a20/
@article{MV_1967_19_3_a20,
author = {B. N. Rachajsky},
title = {On a variant in the theory of characteristics for systems of first order partial differential equations},
journal = {Matemati\v{c}ki vesnik},
pages = {329 },
year = {1967},
volume = {19},
number = {3},
url = {http://geodesic.mathdoc.fr/item/MV_1967_19_3_a20/}
}