Study of the EAS size spectrum in thermal neutrons measured by the PRISMA-YBJ arrayOleg Shchegolev, Victor Alekseenko, Anastasia Bagrova, Yayun He, Bingbing Li, Shuwang Cui, Xinhua Ma, Yuri Stenkin and Vladimir StepanovEPJ Web Conf., 145 (2017) 19021DOI: https://doi.org/10.1051/epjconf/201614519021