Balloon-borne Cosmic Microwave Background experiments Silvia Masi, A. Coppolecchia, E. Battistelli, P. de Bernardis, F. Columbro, G. D’Alessandro, L. Lamagna, A. Paiella, F. Piacentini and G. Presta EPJ Web Conf., 209 (2019) 01046 Published online: 13 May 2019 DOI: 10.1051/epjconf/201920901046