Is there a design method for increased buckling capacity of built-up wood beams?

Method Increased Buckling Capacity of Built-Up Beams and Columns by Donald A. Bender, Robert E. Kimble, and Frank E. Woeste appeared in the 2010 Winter (Vol.20, No.4) issue of Wood Design Focus.

Stability of Built-Up Timber Beams and Columns: Accounting for Modulus of Elasticity Variability by Robert E. Kimble, P.E. and Donald A. Bender, P.E. appeared in ASCE's Practice Periodical on Structural Design and Construction, Vol. 15, No. 4, November 1, 2010.

Calculating buckling capacity of built-up beams and columns by Donald A. Bender, PE; Robert E. Kimble, PE; Frank E. Woeste, PE.