%0 Journal Article %A Kirsch, Andreas %T A note on Sylvester's proof of discreteness of interior transmission eigenvalues %J Comptes Rendus. Mathématique %D 2016 %P 377-382 %V 354 %N 4 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2016.01.015/ %R 10.1016/j.crma.2016.01.015 %G en %F CRMATH_2016__354_4_377_0