@article{GDZPPN00220696X,
title = {Intersection theory for linear eigenvalue problems.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {394},
year = {1989},
pages = {1-24},
zbl = {0676.35072},
url = {http://dml.mathdoc.fr/item/GDZPPN00220696X}
}
Gutkin, Eugene; Johnson, Russell. Intersection theory for linear eigenvalue problems.. Journal für die reine und angewandte Mathematik, Tome 394 (1989) pp. 1-24. http://gdmltest.u-ga.fr/item/GDZPPN00220696X/