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[1]
Ladyzenskaja O.A., 1964, LINEAR QUASILINEAR E
[2]
Littman W., 1963, ANN SCUOLA NORM-SCI, V17, P43
[3]
MAZJA VG, 1970, VESTNIK LENINGRAD U, V25, P42
[6]
Stampacchia G., 1965, ANN I FOURIER, V15, P189