Spot modelling of periodic weak-line T Tauri stars observed by CoRoT in NGC 2264 A. F. Lanza, E. Flaccomio, S. Messina, G. Micela, I. Pagano and G. Leto A&A, 592 (2016) A140 Published online: 15 August 2016 DOI: 10.1051/0004-6361/201628382