CIGNA, A.; CUCCHI, F.; FORTI, P. Engineering problems in developing and managing show caves. Journal of Nepal Geological Society, [S. l.], v. 22, p. 85–94, 2000. DOI: 10.3126/jngs.v22i0.32314. Disponível em: https://nepjol.info/index.php/JNGS/article/view/32314. Acesso em: 17 aug. 2024.