by Barlow, J. L., Nichols, N. K., Plemmons, R. J.
Published in SIAM journal on scientific and statistical computing (01.09.1988)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (01.07.1995)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (17.05.1996)

by By Christi Harlan and Kyle Pope
Published in The Wall Street journal Asia (06.05.1993)

by Schmidt, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (18.04.1993)

by Zielenziger, Michael
Published in The Gazette (Montreal) (22.01.1994)

by By Christi Harlan and Kyle Pope
Published in The Wall Street journal. Eastern edition (05.05.1993)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (22.10.1995)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (03.08.1996)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (27.10.1995)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (29.05.1996)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (01.08.1996)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (13.10.1996)

by Gazette Telegraph and news services
Published in The gazette (Colorado Springs, Colo.) (01.05.1996)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (10.12.1996)

by Joanna Bean and Bill Vogrin, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (22.10.1995)

Published in The gazette (Colorado Springs, Colo.) (27.03.1996)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (09.10.1996)

by Bean, Joanna, Gazette Telegraph
Published in The gazette (Colorado Springs, Colo.) (27.02.1996)

Published in The gazette (Colorado Springs, Colo.) (23.10.1995)