It is shown through a mathematical proof and by using simple test examples
that the fundamental principles of the method of Elber and Karplus (EK) for
determining reaction paths ate incorrect. Therefore the method, including
its improved versions, and the results obtained with the algorithms based o
n the stategy of EK, even when they are in concordance with experimental da
ta should he accepted with reservations. (C) 1999 Elsevier Science B.V. All
rights reserved.