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Flux variations of QSO 0957 + 561 A, B and image splitting by stars near the light path

K. ChangHamburger Sternwarte, Gojenbergsweg 112, D-2050, Hamburg, 80, FRGS. RefsdalHamburger Sternwarte, Gojenbergsweg 112, D-2050, Hamburg, 80, FRG
1979en
ABI

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