1. Three- and four-dimensional cardiovascular ultrasound imaging: A new era for echocardiography;Belohlavek,1993
2. New concepts in echocardiography;Bom,1972
3. Multiplane transesophageal echocardiography in congenital heart defects: An initial experience [abstract];Cromme-Dijkhuis;Circulation,1994
4. Esophageal echocardiography;De Jong;IEEE Trans. Biomed,1986
5. Ultrasonic endoscope;MlMagno;Lancet,1980