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Optical identifications of radio sources in the 5C 6 surveyPerryman, M. A. C. · Monthly Notices of the Royal Astronomical Society · 1979
Optical identifications of radio sources in the 5C 7 surveyPerryman, M. A. C. · Monthly Notices of the Royal Astronomical Society · 1979
S 10830 Trianguli – ein interessanter kataklymischer VeränderlicherG. A. Richter; P. Notni; F. Börngen; V. Afanasjev; I. D. Karachentsev; A. Kopylov · 1981
Positions of extragalactic objects in the vicinity of M3 and M31 (5C3 radio field) and in the 5C1 radio fieldW. R. Dick; H. Lorenz; P. Notni; E. Schilbach; R.-D. Scholz; G. A. Richter · 1986