1. Users Manual, Version 6.10,2010
2. The axisymmetric problem of circular cylindrical shell made of materials with different stiffnesses in tension and compression;Ambartsumyan;Izv. Akad. Nauk. SSSR Mekh.,1965
3. Elasticity Theory of Different Moduli;Ambartsumyan,1986
4. The basic equations of the theory of elasticity for materials with different stiffnesses in tension and compression;Ambartsumyan;Mech. Solids,1966
5. Nonlinear Finite Elements for Continua and Structures;Belytschko,2014