@article{10_4064_ap_46_1_157_163,
     author = {Jan G. Krzy\.z},
     title = {Generalized {Fredholm} eigenvalues of a {Jordan} curve},
     journal = {Annales Polonici Mathematici},
     pages = {157--163},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1985},
     doi = {10.4064/ap-46-1-157-163},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-46-1-157-163/}
}