Online first
Published:
2025-10-27
Views: 32
DOI:
https://doi.org/10.31489/2025ec4/1190
Views: 29
DOI:
https://doi.org/10.31489/2025ec4/1200
Views: 35
DOI:
https://doi.org/10.31489/2025ec4/1204



Academician E.A.Buketov University of Karaganda