Nesterova N.M. ,     Chudakov A.E. Cherenkov radiation of extensive air showers. Nuovo Cimento , Vol.8,suppl.N2 , с. P.606-611 , 01.1958   Dobrotin N.A. ,     Zacepin G.T. ,     Chudakov A.E. ,     Grigorov N.L. ,     Vernov S.N. Investigation of interaction at extremely high-energies using the analysis of extensive air showers. Nuovo Cimento , Vol.8,suppl.N2 , с. P.737-741 , 01.1958   Nesterova N.M. ,     Chudakov A.E. ,     Zatsepin V.I. ,     Dadykin V.L. A search of photons with the energy of 1O~13 ev from discrete sources of cosmic radiation. en=ru Неизвестное название , Vol.3 , с. P.106-108 , 01.1962   Nesterova N.M. ,     Chudakov A.E. ,     Zatsepin V.I. ,     Dadykin V.L. On high energy photons from local sources. I-8632 Intern. Conf. on Cosmic Rays. Jaipur, december 1963. Proc. , Vol.4 , с. P.199-202 , 01.1963