1. Uber die formanderung dunnwandiger rohere, insbesondere federnder ausgleichrohre;Von Karman;Z Vereines Dtsch Ing,1910
2. Effect of internal pressure on flexibility and stress intensification factors of curved pipes or welded elbows;Rodabaugh;J Appl Mech,1956
3. The influence of pressure on the bending of curved tubes;Crandall;Proc Ninth Int Conf Appl Mech,1957
4. Limit loads for pipe elbows under in-plane closing bending moment;Shalaby;ASME J Pressure Vessel Technol,1998
5. Closed-form collapse moment equations of elbows under combined internal pressure and in-plane bending moment;Chattopadhyay;ASME J Pressure Vessel Technol,2000