KOBILOV N. S.; YANGIBAYEV A.I.; OMONOV Z.J. NEW COMPOSITE LUBRICANTS AND WEIGHTINGS FOR DRILLING OIL AND GAS WELL. International Journal of Innovations in Engineering Research and Technology, Maharashatra, India, p. 1–4, 2021. Disponível em: https://repo.ijiert.org/index.php/ijiert/article/view/2146. Acesso em: 25 aug. 2025.