Searching for η-mesic Helium with WASA-at-COSY facilityOleksandr Rundel, Oleksandr Khreptak, Magdalena Skurzok, Wojciech Krzemien and Pawel MoskalEPJ Web Conf., 130 (2016) 02008DOI: https://doi.org/10.1051/epjconf/201613002008
