@article{1250129007,
author = {Colella, P. and Cordes, H.O.},
title = {The $C*$-algebra of the elliptic boundary problem},
journal = {Rocky Mountain J. Math.},
volume = {10},
number = {4},
year = {1980},
pages = { 217-238},
language = {en},
url = {http://dml.mathdoc.fr/item/1250129007}
}
Colella, P.; Cordes, H.O. The $C*$-algebra of the elliptic boundary problem. Rocky Mountain J. Math., Tome 10 (1980) no. 4, pp. 217-238. http://gdmltest.u-ga.fr/item/1250129007/