Estimation of Heart Parameters Using Skin Potential Measurements A fundamental problem of vector cardiography is the estimation of the state of the heart on the basis of skin potential measurements. A mathematical model relating ventricular dipoles to surface potentials is sketched. Then it is shown that the inverse problem-that of determining electrical heart parameters on the basis of skin potential measurements-may be viewed as a nonlinear multipoint boundary value problem. A feasible solution, employing quasilinearization and high-speed digital computers, is given. CACM November, 1964 Bellman, R. Collier, C. Kagiwada, H. Kalaba, R. Selvester, R. CA641110 JB March 9, 1978 4:00 PM 973 5 973 973 5 973 973 5 973 1278 5 973 973 6 973 1028 6 973 1029 6 973