by Protas, Bartosz, Bewley, Thomas R., Hagen, Greg
Published in Journal of computational physics (20.03.2004)

by Hagen, Greg
Published in The Guardian (London) (12.05.2023)

by Banaszuk, Andrzej, Mehta, Prashant G., Hagen, Greg
Published in IFAC Proceedings Volumes (2006)

by TODD WILLIAMSON, FELTON BOHANNON, MIKE CONNER, VINCENT CALAMARI, WILLIAM LYRBERG, PEGGY DAVIS, WILLIAM R. TAYLOR, KAREN ROSS, GREG PETERMAN, ROGER HAGEN, ED MORSE, CARSON BEVAN, LEN CAYCE, ALEX PEARLSTEIN, MATT ROBERSON, JEFF BURROW, BONNIE BYERS, DENNIS
Published in The Atlanta journal-constitution (2001) (20.07.2003)

by ANDREA PONTICIELLO, SAM MARTONE, STEVE WADSWORTH, DAVE ALAVEZOS, CHERYL MANLY, ALLAN VAN STRALEN, PAUL HAGEN, BETH NORMAN & GREG SAGER Deputy District Attorneys Mendocino County
Published in The Press Democrat (11.03.1996)