VASILYEV, Sergey Anatolyevich; 						TZAREVA, Galina Olegovna.
 USING SINGULAR PERTURBATED SYSTEMS OF DIFFERENCIAL EQUATIONS  OF  INFINITE ORDER FOR COUNTABLE MARKOV CHAINS ANALYSIS.
<strong>Modern Information Technologies and IT-Education</strong>, [S.l.], v. 12, n. 1, p. 15-20, nov. 2016.
ISSN 2411-1473. Available at: &lt;<a href="http://sitito.cs.msu.ru/index.php/SITITO/article/view/8" target="_new">http://sitito.cs.msu.ru/index.php/SITITO/article/view/8</a>&gt;. Date accessed: 04 aug. 2025.