Red sequence of AbellX-ray underluminous clusters - Trejo-Alonso, J. J; Caretta, C A; Laganá, Tatiana Ferraz; Sodré Júnior, Laerte; Cypriano, Eduardo Serra; Lima Neto, Gastão Cesar Bierrenbach; Oliveira, Claudia Lucia Mendes de (Monthly Notices of the Royal Astronomical Society, 2014)