@article{SM_1970_12_3_a3,
     author = {J. Laiterer},
     title = {Criteria for normal solvability of systems of singular integral equations and {Wiener--Hopf} equations},
     journal = {Sbornik. Mathematics},
     pages = {387--403},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1970_12_3_a3/}
}