1. N. V. Azbelev, V. P. Maksimov, and L. F. Rakhmatullina, Introduction to the Theory of Linear Functional Differential
Equations (Nauka, Moscow, 1991; World Federation Publishers Company, Atlanta,
GA, 1995).
2. N. V. Azbelev and V. V. Malygina, “On stability of trivial solution of
nonlinear equations with aftereffect,” Izv. Vyssh. Uchebn. Zaved., Mat. No. 6(385), 20 (1994)
[Russ. Math. 38:6, 18 (1994)].
3. A. Berman and R. J. Plemmons, Nonnegative
Matrices in the Mathematical Sciences (Academic Press, New York,
1979).
4. L. Collatz, Functional Analysis and Numerical
Mathematics (Mir, Moscow, 1969) [in Russian].
5. G. V. Demidenko and I. A. Mel’nik, “On a method of approximation
of solutions to delay differential equations,” Sib. Mat. Zh. 51, 528 (2010) [Sib. Math. J. 51, 419 (2010)].