1. G.Meier, International Journal of Solids and Structures 7 (1971) 345–372.
2. Z.P.Bazant, Journal of Engineering Mechanics, ASCE 102, EM2 (1976) 331–344.
3. H.Petryk, in Plasticity Today: Modeling, Methods and Applications, A.Sawczuk and G.Bianchi (eds.), Elsevier, London (1985) 429–447.
4. Q.S.Nguyen and C.Stolz, in IUTAM Symposium on Application of Multiple Scaling in Mechanics, E.N.S., Paris, France (1986).
5. Q.S.Nguyen, Journal of Mechanics and Physics of Solids 35, No. 3 (1987) 303–324.