Evidence for disks at an early stage in class 0 protostars? M. Gerin, J. Pety, B. Commerçon, A. Fuente, J. Cernicharo, N. Marcelino, A. Ciardi, D. C. Lis, E. Roueff, H. A. Wootten and E. Chapillon A&A, 606 (2017) A35 Published online: 04 October 2017 DOI: 10.1051/0004-6361/201630187