Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Albayrak, E.A., Gülmez, E., Kaya, M., Kaya, O., Yetkin, T., et.al., "Search for Heavy Majorana Neutrinos in Mu(+/-)Mu(+/-) + Jets Events Inproton-Proton Collisions at Root S=8tev", Physics Letters B, 748, 144-166, 2015.