JANKOVSKIS, Janis; PONOMARENKO, Nikolajs; NARICA, Pavels. An Investigation on High Frequency Permeability of Polycrystalline Ferrities. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 2, p. 194–201, 2015. DOI: 10.17770/etr2011vol2.977. Disponível em: https://journals.rta.lv/index.php/ETR/article/view/977.. Acesso em: 3 may. 2024.