Mathematical Modelling of Electric and Magnetic Fields of Main Pipelines Cathodic Protection in Electrically Anisotropic MediaVladimir Krizsky, Pavel Aleksandrov, Alexey Kovalskii and Sergey ViktorovE3S Web of Conf., 225 (2021) 04002DOI: https://doi.org/10.1051/e3sconf/202122504002