GOODWIN, W. E.; CASEY, W. C.; WOOLF W (1955-03-12). „Percutaneous trocar (Needle) nephrostomy in hydronephrosis”. J Am Med Assoc. 157 (11): 891—4. PMID13233046. doi:10.1001/jama.1955.02950280015005..
Fernström, I.; Johansson, B. (1976). „Percutaneous pyelolithotomy. A new extraction technique”. Scandinavian Journal of Urology and Nephrology. 10 (3): 257—9. PMID1006190. doi:10.1080/21681805.1976.11882084.
GOODWIN, W. E.; CASEY, W. C.; WOOLF W (1955-03-12). „Percutaneous trocar (Needle) nephrostomy in hydronephrosis”. J Am Med Assoc. 157 (11): 891—4. PMID13233046. doi:10.1001/jama.1955.02950280015005..
Fernström, I.; Johansson, B. (1976). „Percutaneous pyelolithotomy. A new extraction technique”. Scandinavian Journal of Urology and Nephrology. 10 (3): 257—9. PMID1006190. doi:10.1080/21681805.1976.11882084.