Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Gülmez, E., Kaya, M., Kaya, O., Yetkin, E.A., Yetkin, T., et.al., 'Search for Two Higgs Bosons in Final States Containing Two Photons and Two Bottom Quarks in Proton-proton Collisions at 8 TeV', Physical Review D, 94, 5, 2016.