@misc{yuan_a_perturbation_1994, 
author={Yuan, H.},
title={A perturbation analysis of combined mode I and III dynamic crack propagation},
year={1994},
howpublished = {GKSS report},
note = {Yuan, H.: A perturbation analysis of combined mode I and III dynamic crack propagation. Acta Mechanica. 1994. vol. 104, no. 12, 27-63.}}