1. Presbyesophagus: cineradio-graphic manifestations;Zboralske;Radiology (Minneap.),1964
2. Presbyesophagus: esophageal motility in nonagenarians;Soergel;J. Clin. Invest.,1964
3. The esophagus in the geriatric patient;Zboralske;Radiol. Clin. N. Amer.,1965
4. X-ray examination of the stomach, a description of the roentgenologic anatomy, physiology and pathology of the esophagus, stomach and duodenum;Templeton,1964
5. Esophageal motility;Ingelfinger;Physiol. Rev.,1958