Zhao-Qin Huang, Jun Yao and Yue-Ying Wang. (2013). An Efficient Numerical Model for Immiscible Two-Phase Flow in Fractured Karst Reservoirs.
            <i>Communications in Computational Physics</i>. <i>13</i> (2).
            540-558.
         doi:10.4208/cicp.160711.240212a