Yerezhep, N., W.H. Trzaska, L. Bezrukov, T. Enqvist, P. Kuusiniemi, L. Inzhechik, J. Joutsenvaara, et al. “Underground Investigation of Extensive Air Showers Spectra at High Energy Range of Cosmic Rays and Other Research in the Pyhäsalmi Mine”. Recent Contributions to Physics 2020, no. 1 (March 27, 2020): 19–26. Accessed July 13, 2026. https://bph.kaznu.kz/index.php/zhuzhu/article/view/1245.