Buradasınız
Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Gülmez, E., Kaya, M., Kaya, O., Yetkin, E.A., Yetkin, T., et.al., 'Upsilon (nS) Polarizations versus Particle Multiplicity in pp Collisions at root s=7 TeV', Physics Letters B, 761, 31-52, 2016.