1. |
V. P. Rubanik, G. V. Nozhak, “A. Halanay, D. Wexler. Teoria calitativa a sistemelor du impulsuri. Bucuresti, Ed. Acad. RSR, 1968, 315 p. (Book review)”, Zh. Vychisl. Mat. Mat. Fiz., 10:4 (1970), 1056 ; U.S.S.R. Comput. Math. Math. Phys., 10:4 (1970), 327–328 |