1. On the Hertz problem for linearly and nonlinearly elastic finite bodies;Kravchuk;Dokl.Akad. Nauk SSSR,1976
2. Sopra alcune questioni di elastostatica;Signorini,1933
3. Existence Theorems in Elasticity Theory;Fichera,1974
4. Les inéquations en mécanique et en physique;Duvaut,1972
5. Solid resting on a stratified medium;Frémond,1973