Coba jelasin Daftar pustaka dari Shmuel Shtrikman dong

E. H. Frei, S. Shtrikman, and D. Treves, 1957, Critical Size and Nucleation Field of Ideal Ferromagnetic Particles, Phys. Rev. 106, 446.

Z. Hashin and S. Shtrikman, 1963, A variational approach to the elastic behaviour of multiphase materials: J. Mech. Phys. Solids 11, 127-140.