Ismayilov А. Е., Aituganova Ж., Shekerbayeva Ш., Uypalakova Д., and Sydykova М., “GRAPH-MATRIX DESCRIPTION OF MULTI-CONTOUR INTERACTIONS IN A BIOTECHNOLOGICAL BEER FERMENTATION SYSTEM”, Phys-Math, vol. 94, no. 2, pp. 178–186, Jun. 2026.