R. Knapp

A stand density index for complex mixed species forests in the northeastern United States

Mark J. Ducey, M. Ducey, Rachel A. Knapp, 2010 .

A comparison of absolute and relative stand density measures used in the northeastern United States

R. Knapp, 2014 .

Rapid Assessment of Relative Density in Mixed-Species Stands of the Northeastern United States

M. Ducey, R. Knapp, 2010 .