00326nas a2200121   4500000000100000000000100001008004100002260004400043100001400087700001400101700001500115245007400130       2004                            d  c0-13 Oct. 2004aThe Hague, Netherlands 1 aL.C. Yang1 aHyun Yang1 aE.M. Feron00aMultiple model estimation for improving conflict detection algorithms