by Kays, J.S
Published in Journal of extension (01.04.2004)

by Sharew, H, Kays, J.S
Published in Northern Journal of Applied Forestry (01.12.2006)

by Kays J.S, Canham C.D
Published in Forest science (01.06.1991)

by Kays J.S, Smith D.W, Zedaker S.M
Published in Forest Service general technical report SO United States, Southern Forest Experiment Station (1985)

by Kays, J.S, Smith, D.W, Zedaker, S.M, Kreh, R.E
Published in Southern journal of applied forestry (01.05.1988)