We will be performing a scheduled maintenance of this server on Thursday, July 2, 2015. While we are working, this server may become unrechable for short periods of time. In the mean time, you may use our dblp server in Dagstuhl instead.
M. Vanbegin, M. Verhaegen: Algorithm 675: Fortran subroutines for computing the square root covariance filter and square root information filter in dense or Hessenberg forms.ACM Trans. Math. Softw.15(3): 243-256 (1989)