Tsotsos, John K. (1985). "The Computer Assessment of Left Ventricular Wall Motion: The ALVEN Expert System". Computers and Biomedical Research. 18 (3). Elsevier Science: 254–277. doi:10.1016/0010-4809(85)90050-3. PMID4006450.
Tsotsos, John K. (1985). "The Computer Assessment of Left Ventricular Wall Motion: The ALVEN Expert System". Computers and Biomedical Research. 18 (3). Elsevier Science: 254–277. doi:10.1016/0010-4809(85)90050-3. PMID4006450.