Draganova, G. and Markov, K. (1997) “On the brittle fracture of a pin-jointed frame”, Ann. Sofia Univ. Fac. Math. and Inf, 89, pp. 193–202. Available at: https://ftl5.uni-sofia.bg./index.php/fmi/article/view/368 (Accessed: 24 November 2024).