V. A. Vshivtsev, A. V. Prokopov, A. V. Tatarintsev, “Some features of the thermodynamics of nonlinear classical systems”, TMF, 125:2 (2000), 315–325; Theoret. and Math. Phys., 125:2 (2000), 1568–1577
1985
2.
A. V. Prokopov, “Integral introduction of geometric optic beam equations”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 11:24 (1985), 1526–1529
