1. S. V. Belov, Porous Metals in Mechanical Engineering [in Russian], Mashinostroenie, Moscow (1981).
2. P. A. Vityaz', V. M. Kaptsevich, A. G. Kostornov et al., Formation of Structure and Properties of Porous Powder Materials [in Russian], Metallurgiya, Moscow (1993).
3. V. V. Skorokhod, S. M. Solonin, and L. I. Chernyshev, ?Investigation of the sintering mechanism for high-porosity materials in the presence of volatile blowing agents,? Poroshk. Metall., No. 11, 31?36 (1974).
4. Yu. N. Kryuchkov, ?Structural parameters of a model for formed materials made of monodisperse powders,? Poroshk. Metall., Nos. 11?12, 79?85 (1993).
5. Yu. P. Zarichnyak, S. S. Ordan'yan, A. N. Sokolov et al., ?Size effects in percolation processes,? Poroshk. Metall., No. 7, 64?71 (1986).