K. B. Pigg and S. M. Ickert-Bond, “Honoring Dr. Donald J. Pinkava (1933–2017) Director of the Vascular Plant Herbarium, School of Life Sciences, Arizona State University 1964–2000”, J. Bot. Res. Inst. Texas, vol. 16, no. 1, pp. 261–271, Jul. 2022.