00621naa#a2200181#i#450# EN\\bibl\43498 20241125124915.1 2072-9502 20210415b2021####ek#y0engy0150####ca RU APPLYING NEURAL NETWORKS IN RECOGNIZING CONDITIONALLY GRAPHICAL ELECTRICAL SYMBOLS Journal article Astrakhan Astrakhan State Technical University 2021 9 с. Journal article local Экономика. Экономические науки. 33 Alekseev Pavel P. Kvyatkovskaya Irina Yur'evna vestnik.astu.org