Brawner, C. O., & Milligan, V. (1971). Stability in open pit mining: Proceedings of the first international conference on stability in open pit mining, Vancouver, B. C., Canada, November 23-25, 1970. New York: Society of Minning Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers.
Παραπομπή Chicago StyleBrawner, C. O., and V. Milligan. Stability in Open Pit Mining: Proceedings of the First International Conference On Stability in Open Pit Mining, Vancouver, B. C., Canada, November 23-25, 1970. New York: Society of Minning Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, 1971.
Παραπομπή MLABrawner, C. O., and V. Milligan. Stability in Open Pit Mining: Proceedings of the First International Conference On Stability in Open Pit Mining, Vancouver, B. C., Canada, November 23-25, 1970. New York: Society of Minning Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, 1971.