by Potter, W.D., Tidrick, T.H., Hansen, T.H., Hill, L.W., Nute, D.E., Fried, L.M., Leigh, T.W.
Published in Expert systems with applications (1990)

by Jordan, C.F, Farnworth, E.G, Tidrick, T.H, Smathers, W.M
Year of Publication 1987

by Smathers, W.M, Jordan, C.F, Farnworth, E.G, Tidrick, T.H
Published in Bioscience (01.11.1983)

by Farnworth, E.G, Tidrick, T.H, Smathers, W.M. Jr, Jordan, C.F
Published in International journal of environmental studies (01.05.1983)