PROPOSING A HIGH-PRECISION PETROLEUM PIPELINE MONITORING SYSTEM FOR IDENTIFYING THE TYPE AND AMOUNT OF OIL PRODUCTS USING EXTRACTION OF FREQUENCY CHARACTERISTICS AND A MLP NEURAL NETWORK Статья Mayet A.M., Nurgalieva K.Sh., Al-Qahtani A.A., Narozhnyi I.M., Alhashim H.H., Nazemi Ehsan, Indrupskiy I.M. Mathematics. MDPI AG. Том 10. 2022. 2916 с.