Jerez-Hanckes , CarlosNicaise , Serge and Urzúa-Torres , Carolina. (2018). Fast Spectral Galerkin Method for Logarithmic Singular Equations on a Segment.
            <i>Journal of Computational Mathematics</i>. <i>36</i> (1).
            128-158.
         doi:10.4208/jcm.1612-m2016-0495