Roderick W.C. Scherptong,Ivo R. Henkens,Sum Che Man,Saskia Le Cessie,Hubert W. Vliegen,Harmen H.M. Draisma,Arie C. Maan,Martin J. Schalij,Cees A. Swenne.Normal limits of the spatial QRS-T angle and ventricular gradient in 12-lead electrocardiograms of young adults: dependence on sex and heart rate[J].Journal of Electrocardiology,2008(6).
Jan A. Kors,Gerard van Herpen,Jan H. van Bemmel.QT Dispersion as an Attribute of T-Loop Morphology[J].Circulation,1999(11).