Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Gülmez, E., Işıldak, B., Kaya, M., Kaya, Ö., Özkürücüklü, S., Sönmez, N. et al., "Measurement of the Lambda(b) cross section and the (Lambda)over-bar(b) to Lambda(b) ratio with J/psi Lambda decays in pp collisions at root s=7 TeV CMS Collaboration", Physics Letters B, 714, 2-5, 136-157, 2012.