On Lagrange multipliers of trust-region subproblems.
(English).
In:
Chleboun, J., Přikryl, P., Segeth, K.
and
Vejchodský, T. (eds.):
Programs and Algorithms of Numerical Mathematics.
Proceedings of Seminar. Dolní Maxov, June 1-6, 2008.
Institute of Mathematics AS CR, Prague, 2008.
pp. 130-137