2025. A REGULARIZED TRACE OF A TWO-FOLD DIFFERENTIATION OPERATOR WITH NON-LOCAL MATCHING CONDITIONS ON A STAR GRAPH WITH ARCS OF THE SAME LENGTH. ҚазҰУ Хабаршысы. Математика, механика, информатика сериясы. 126, 2 (Jun. 2025). DOI:https://doi.org/10.26577/JMMCS2025126203.