by Newgren, Kenneth E., Carroll, Archie B.
Published in Long range planning (01.08.1979)

by Newgren, Kenneth E, Kellogg, C E, Gardner, William
Published in S.A.M. advanced management journal (1984) (01.10.1987)

by Certo, Samuel C, Newgren, Kenneth E
Year of Publication 01.04.1977

by Newgren, Kenneth E, Kellogg, Calvin E, Gardner, William
Published in Akron business and economic review (01.07.1988)