1. Ulmanu V., Zisopol D., Trifan C. Experimental research concerning the influence of external diameteron the behavior of coiled tubing to cyclic bending with internal pressure // Записки Горного института. 2007. № 2Том 170. C. 46-48.

1. Ulmanu V., Zisopol D., Trifan C. Experimental research concerning the influence of external diameter on the behavior of coiled tubing to cyclic bending with internal pressure // Journal of Mining Institute. 2007. № 2Том 170. C. 46-48.