1. Armand, N. A.: 1969,Radiotechnika i Elektronika 14, 1157.
2. Armand, N. A., Lomakin, V. A., and Sarkisian, V. A.: 1976,Radiotechnika i Elektronika 21, 11
3. Brosche, P., Wade, C., and Hjellming, R.: 1973,Astrophys. J. 183, 805.
4. Cannon, W., Langley, R., Petrachenko, W., Broten, N., Legg, T., Fort, D., Yen, J., Barber, P., and Quigley, J.: 1975, ?Geodetic and Astrometric Analysis of Fringe-Rate Residuals from the Algonquin-Cholbolton 2.8 km long Baseline Interferometer?, Preprint York University of Toronto.
5. Dravskikh, A. F., Finkelstein, A. M., and Krasinskii, G. A.: 1975a,Astrophys. Space Sci. 38, 255.