Orville, Harold D, John H Hirsch, and Richard D Farley. “Further Results on Numerical Cloud Seeding Simulations of Stratiform-Type Clouds”. The Journal of Weather Modification 19, no. 1 (April 1, 1987): 57–61. Accessed September 22, 2023. https://journalofweathermodification.org/index.php/JWM/article/view/386.