R. Erikson

Mechanical grading of lumber sawn from small-diameter lodgepole pine, ponderosa pine, and grand fir trees from Northern Idaho

Thomas M. Gorman, David W. Green, R. G. Erikson, 2000 .

Fatigue Testing of Stiffened Traffic Signal Structures

Jay A. Puckett, J. Puckett, Robert G. Erikson, 2010 .