@article{10_4064_ap_50_1_27_35,
     author = {Jan Bochenek},
     title = {On some linear eigenvalue problems for strongly elliptic systems with an indefinite weight matrix function},
     journal = {Annales Polonici Mathematici},
     pages = {27--35},
     publisher = {mathdoc},
     volume = {50},
     number = {1},
     year = {1989},
     doi = {10.4064/ap-50-1-27-35},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-50-1-27-35/}
}