1. M. Levy, Sur la legitimite de la regle dite du trapeze dans l'etude de la resistance des barrages en maconnerie. Compt. Rend. 126 (1899) 1235?1240.
2. S.P. Timoshenko and J.N. Goodier, Theory of Elasticity. McGraw-Hill, N.Y., 1970.
3. S.D. Carothers, Plane strain in a wedge. Proc. Royal Society. Edinburgh, 23 (1912) 292?306.
4. C.E. Inglis, Some special cases of two-dimensional stress and strain, Trans. Institution of Naval Architects. London 64 (1922) 253.
5. E. Sternberg and W.T. Koiter, The wedge under a concentrated couple: a paradox in the two-dimensional theory of elasticity. J. Appl. Mech. 25 (1958) 575?581.