D. Jukic et R. Scitovski, EXISTENCE RESULTS FOR SPECIAL NONLINEAR TOTAL LEAST-SQUARES PROBLEM, Journal of mathematical analysis and applications (Print), 226(2), 1998, pp. 348-363
In this paper we prove an existence theorem for a special nonlinear to
tal least squares problem. We show that the optimal parameters of the
generalized logistic function exist in the sense of total least square
s, provided the data satisfy the Chebyshev's inequality. (C) 1998 Acad
emic Press.