M. Somasekhar, S. Vivek, Keshav. S. Malagi, V. Ramesh and S. M. Deshpande. (2012). Adaptive Cloud Refinement (ACR) - Adaptation in Meshless Framework. Communications in Computational Physics. 11 (4). 1372-1385. doi:10.4208/cicp.130510.150511s