Bo Zhang, Benzhuo Lu, Xiaolin Cheng, Jingfang Huang, Nikos P. Pitsianis, Xiaobai Sun and J. Andrew McCammon. (2013). Mathematical and Numerical Aspects of the Adaptive Fast Multipole Poisson-Boltzmann Solver.
            <i>Communications in Computational Physics</i>. <i>13</i> (1).
            107-128.
         doi:10.4208/cicp.210711.111111s