1. Bjork V O 1969Scand. Thorac. Cardiovasc. Surg. 3 1
2. Bjork V O 1971Scand. J. Thorac. Cardiovasc. Surg. 5 87
3. Bhuvaneshwar G S, Venkatesan V S and Valiathan M S 1978 A pulse duplicator forin vitro evaluation of prosthetic heart valvespresented at Int. Symp. and Workshop on Biomedical Engg., New Delhi
4. Bhuvaneshwar G S, Venkatesan V S, Patankar V L, Kartha C C, Arthur V, Lal G and ValiathanM S Indian J. Med. Res. 14 580
5. Fettel B E, Johnston D R and Morris P E 1980Medical instrumentation 14 161