Authors:
Perez-Torres, MA
Marcaide, JM
Guirado, JC
Ros, E
Shapiro, II
Ratner, MI
Sardon, E
Citation: Ma. Perez-torres et al., Towards global phase-delay VLBI astrometry: observations of QSO 1150+812 and BL 1803+784, ASTRON ASTR, 360(1), 2000, pp. 161-170
Authors:
Lebach, DE
Ratner, MI
Shapiro, II
Ransom, RR
Bietenholz, MF
Bartel, N
Lestrade, JF
Citation: De. Lebach et al., Milliarcsecond change of IM Pegasi radio position in 1 hour coincident with sharp rise in flux density, ASTROPHYS J, 517(1), 1999, pp. L43-L46
Authors:
Ros, E
Marcaide, JM
Guirado, JC
Ratner, MI
Shapiro, II
Krichbaum, TP
Witzel, A
Preston, RA
Citation: E. Ros et al., High precision difference astrometry applied to the triplet of S5 radio sources B1803+784/Q1928+738/B2007+777, ASTRON ASTR, 348(2), 1999, pp. 381-393