Y.C. Fung, Foundations of Solid Mechanics, Prentice-Hall (1965), Chapter 12.
2.
S.A. Ambartsumyan and A.A. Khachatryan, "Basic Equations of the Theory of Elasticity for Materials with Different Resistance to Tension and Compression" , Mekhanika Tverdogo Tela , Vol. 1 (1966), p. 44.