Krumland, Bruce and Lee C. Wensel. 1978. 
        Generalized Height Diameter Equations for Coastal Conifers. Co-op 
Redwood Yield Resarch Project (CRYRP) R.N. 8.
______. 1979a. 
        Diameter Distribution Models for Coastal Stands in California.  
CRYRP R.N. 11.

______. 1979b. 
        Generalized Height Diameter Curves for Red Alder and Tanoak. CRYRP 
R.N. 12.

______. 1981. 
        A Tree Incremental Model System for North Coastal California. CRYRP 
R.N. 15.