Comparison of the MIPAS products obtained by four different level 2 processors - Raspollini, P; Arnone, E; Barbara, F; Carli, B; Castelli, E; Ceccherini, S; Dinelli, B; Dudhia, A; Kiefer, M; Papandrea, E; Ridolfi, M (Editrice Compositori s.r.l., 2013)