no. 2
Numerical stability in dynamic elastic-plastic problems
ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 14 (1980) no. 2, pp. 175-188. 
@article{M2AN_1980__14_2_175_0,
     author = {Miyoshi, Tetsuhiko},
     title = {Numerical stability in dynamic elastic-plastic problems},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
     pages = {175--188},
     publisher = {Centrale des revues, Dunod-Gauthier-Villars},
     volume = {14},
     number = {2},
     year = {1980},
     zbl = {0433.73065},
     mrnumber = {571313},
     language = {en},
     url = {archive.numdam.org/item/M2AN_1980__14_2_175_0/}
}
Miyoshi, Tetsuhiko. Numerical stability in dynamic elastic-plastic problems. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 14 (1980) no. 2, pp. 175-188. http://archive.numdam.org/item/M2AN_1980__14_2_175_0/

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