@article{1102986513,
author = {Sloss, James M.},
title = {Reflection laws of systems of second order elliptic differential equations in two independent variables with constant coefficients.},
journal = {Pacific J. Math.},
volume = {27},
number = {3},
year = {1968},
pages = { 541-575},
language = {en},
url = {http://dml.mathdoc.fr/item/1102986513}
}
Sloss, James M. Reflection laws of systems of second order elliptic differential equations in two independent variables with constant coefficients.. Pacific J. Math., Tome 27 (1968) no. 3, pp. 541-575. http://gdmltest.u-ga.fr/item/1102986513/