@article{1256049514,
author = {Donnelly, Harold},
title = {Spectral invariants of the second variation operator},
journal = {Illinois J. Math.},
volume = {21},
number = {4},
year = {1977},
pages = { 185-189},
language = {en},
url = {http://dml.mathdoc.fr/item/1256049514}
}
Donnelly, Harold. Spectral invariants of the second variation operator. Illinois J. Math., Tome 21 (1977) no. 4, pp. 185-189. http://gdmltest.u-ga.fr/item/1256049514/