Chýla, J. Renormalization and factorization scale analysis of antib-b production in antiproton-proton collisions. Journal of High Energy Physics. 2003, 3(42), 1-14. ISSN 1029-8479. E-ISSN 1029-8479. Dostupné z: http://jhep.sissa.it/archive/papers/jhep032003042/jhep032003042.pdf