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publisher = {Springer Science $\mathplus$ Business Media},  volume = {74},  number = {9},  author = {Khachatryan, V. {V. Khachatryan and  et al.}, title = {{Measurement of top quark{\textendash}antiquark pair production in association with a W or Z boson in pp collisions at {\textdollar}{\textdollar}{\textbackslash}sqrt$\lbrace$s$\rbrace$ = 8{\textdollar}{\textdollar} s = 8 {\textdollar}{\textdollar}{\textbackslash},{\textbackslash}text $\lbrace${TeV}$\rbrace${\textdollar}{\textdollar} {TeV}}},  journal = {The European Physical Journal C},  }