The LLE, pattern formation and a novel coherent source Fabrizio Castelli, Massimo Brambilla, Alessandra Gatti, Franco Prati and Luigi A. Lugiato Eur. Phys. J. D, 71 4 (2017) 84 Published online: 11 April 2017 DOI: 10.1140/epjd/e2017-70754-1