For citations:

Marfitsyn S.V., Marfitsyn A.V., Marfitsyn V.P. Increasing the vibration resistance of the gas and oil wells wellhead compound construction according to the patent RU 2416751C1 with the holders executed by a logarithmic spiral. Oil and Gas Studies. 2019;(1):97-100. (In Russ.) https://doi.org/10.31660/0445-0108-2019-1-97-100