@INPROCEEDINGS{
TITLE="Random Scaling of Quasi-Newton BFGS Method to Improve the O(N^2)-operation Approximation of Covariance-matrix Inverse in Gaussian Process. ",
AUTHOR="Y. Zhang, W.E. Leithead, D.J.Leith",
YEAR="2007",
BOOKTITLE="Proc IEEE Multi-conference on Systems and Control, Singapore.",
PAGES=""
}