Additional bibliography for study
Βιβλίο : Tools of Radio Astronomy [electronic resource], Th. L. Wilson, K. Rohlfs, S. Huettemeister
Βιβλίο : Radiative Processes in Astrophysics [electronic resource], Rybicki
1. A fundamental paper on receiver calibration (Kutner & Ulich 1981, ApJ, 250, 341)
2. Two papers on antenna patterns (Bench et al. A&A, 365, 285; Bench et al. A&A, 365, 275, both in 2001)
3. A paper on testing receiver stability by Ossenkopf (A&A, 479, 915, 2008), to be read after the basics about receivers are understood.