Confirmation of 17b-methyl-5b-androst-1-ene-3a,17a-diol metabolite of methandienone in urine by triple quadrupole mass-selective detector gas chromatography (GC/MS/MS) method - Shorabekova, U.; Balgimbekova, K.; Shaldybayeva, Aiman; Talbayev, Talgat (Chemical Bulletin of Kazakh National University, 2013)