Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Pulley, P. E., R. N. Coulsen, J. L. Foltz, W. C. Martin, and C. L. Kelly. 1977. Sampling intensity, informational content of samples, and precision in estimating within-tree populations of Dendroctonus frontalis . Environmental Entomology 6:607-615.