Bonnot, T. W., Jones-Farrand, T., Thompson, F. R., Millspaugh, J. J., Fitzgerald, J. A., Muenks, N., et al. (2019). . Gen. Tech. Rep. Nrs-190. Newtown Square, Pa: U.s. Department Of Agriculture, Forest Service, Northern Research Station. 66 P. http://doi.org/10.2737/NRS-GTR-190 (Original work published July 2019)