Non-destructive assay of nuclear materials using a self-indication methodJun-ichi Hori, Tadafumi Sano, Yoshiyuki Takahashi, Jaehong Lee, Hironobu Unesaki and Ken NakajimaEPJ Web Conf., 146 (2017) 09042DOI: https://doi.org/10.1051/epjconf/201714609042