Calligaris, C., J. M. Calaforra, F. Cucchi, P. Forti, and L. Zini. “Effect of S Strong Rainstorm on the Hydrodynamics of the Puerto Princesa Underground River (Palawan, Philippines)”. Acta Carsologica, vol. 47, no. 1, Sept. 2018, doi:10.3986/ac.v47i1.5000.