1. Silverman needle nephrostomy;Cobb;Journal of Urology,1967
2. Les pyonéphroses. Etude de 50 cas.;Cuker;Journal d'Urologie et de Néphrologie,1971
3. Preliminary nephrostomy preparatory to secondary nephrectomy;Haines;Journal of Urology,1949
4. Treatment of pyonephrosis: a comparative study;Jimenez;Journal of Urology,1978