Harutunyan, G. H.; Movsissyan, A. G.; Piloyan, A. S. COSMOLOGICAL MODELS IN THE PRESENCE OF SCALAR FIELDS. Proc. YSU A: Phys. Math. Sci. 2023, 42 (1 (215), 47-54. https://doi.org/10.46991/PYSUA.2008.42.1.047.