1. Umbilical and uterine artery Doppler velocimetry during maternal exercise;Allen;Am. J. Obst. Gyn.,1991
2. The maternal oxygen tension and acid-base status during pregnancy;Andersen;J. Obstet. Gynaecol. Br. Commonw.,1969
3. Postural influence on maternal capillary oxygen and carbon dioxide tension;Ang;Brit. Med. J.,1969
4. Nuoovi concetti de emodinamicain gravidanzada indavine con cateterismo angiocardiaco;Angelino;Minerva Ginecologica.,1954
5. Studies on autonomic blockade. VI. The mechanisms regulating the hemodynamic changes in the pregnant woman and their relation to the hypertension of toxemia o;Assali;Am. J. Obst. Gyn.,1952