A Korteweg–de Vries description of dark solitons in polariton superfluids - Carretero-González, R.; Cuevas-Maraver, J.; Frantzeskakis, DJ; Horikis, T.P.; Kevrekidis, P. G.; Rodrigues, A.S. (Physics Letters, Section A: General, Atomic and Solid State Physics, 2017)