Patricia B. Bollinger, Eric K. Bollinger, Steven L. Daniel, Rusty A. Gonser, et al.. "Partial incubation during egg laying reduces eggshell microbial loads in a temperate‐breeding passerine" Journal of Avian Biology Vol. 49 Iss. 6 (2018)
Available at: http://works.bepress.com/eric_bollinger/21/