Kairbekov Zhaksyntay Kairbekovich, Anatoly Malоletnev, Jeldybaeva Indira Mukhametkerimovna, и Abilmazhinova Didar Zamanbekovna, «DATA ON ANTIOXIDANT ACTIVITY OF HUMIC SUBSTANCES OF LOW-MINERALIZED SLUDGE SULPHIDE MUD (PELOIDS) AND THEIR CLASSIFICATION », SCT, вып. 3, сс. 32–37, июн. 2019.