Can electron distribution functions be derived through the Sunyaev-Zel’dovich effect?D. A. Prokhorov, S. Colafrancesco, T. Akahori, K. Yoshikawa, S. Nagataki and K.-I. SeonA&A, 529 (2011) A39DOI: https://doi.org/10.1051/0004-6361/201016036