Check my doctoral thesis.  The solution is there.

Fariborz Maseeh-Tehrani
MIT
June 1990

Good luck.

Fariborz Maseeh
fariborz@intellis.com
IntelliSense Corp
16 Upton Drive
Wilmington, MA 01887
www.intellis.com
978-988-8000
978-988-8001 fax