- Weidman, R. H., and G. T. Robbins. 1947. Attacks of pitch moth and turpentine beetle on pines in the Eddy Arboretum . Journal of Forestry 45:428-433.
- Wingfield, M. J., R. A. Blanchette, T. H. Nicholls, and K. Robbins. 1982. Association of pine wood nematode with stressed trees in Minnesota, Iowa, and Wisconsin . Plant Disease 66:934-937.