Authors: CAMPBELL RM COREY BE FALCO EE SHAPIRO II GORENSTEIN MV ELOSEGUI P MARCAIDE JM ALVI K

Citation: Rm. Campbell et al., TOWARD ESTIMATION OF H(0) FROM VLBI OBSERVATIONS OF THE GRAVITATIONALLENS SYSTEM-0957+561, The Astrophysical journal, 426(2), 1994, pp. 486-492