Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Gülmez, E., Işıldak, B., Kaya, M., Özkörücüklü, S., Sönmez, N. et al., “Measurement of the prompt J/ and (2S) polarizations in pp collisions at s =7 TeV”, Physics Letters B, 727, 4-5, 381-402, 2013.