1. The vectorcardiographic significance of upright T waves in V1 and V2 during the first months of life;Castellanos;J. Pediat.,1963
2. The normal electrocardiogram in newborns and infants (a critical review);Liebman,1966
3. Novas relacões electrocardiograficas para o diagnostico das sobrecargas auriculares;Macruz;Rev. Hosp. Clin.,1957
4. The normal P wave;Green,1966
5. Electrocardiographic pattern of atrial enlargement and abnormal impulse formation and conduction;Green,1966