PHYSICS LETTERS B Airapetian, A, Blok, H P, Hesselink, W H A, van der Nat, P B & Wang, S 2008, ' Measurement of parton distributions of strange quarks in the nucleon from charged-kaon production in deep-inelastic scattering on the deuteron ', Physics Letters B, vol. 666, no. 5, pp. 446-450 . https://doi.org/10.1016/j.physletb.2008.07.090 Physics letters / B 666, 446 (2008). doi:10.1016/j.physletb.2008.07.090 Physics Letters B, 666(5), 446-450. Elsevier