ŠVITRA, Donatas. Delays and economic systems dynamics. Lietuvos matematikos rinkinys, [S. l.], v. 53, n. B, p. 108–111, 2012. DOI: 10.15388/LMR.B.2012.20. Disponível em: https://journals.vu.lt./LMR/article/view/17106.. Acesso em: 21 nov. 2024.