Lifjeld, J. T., Laskemoen, T., Kleven, O., Pedersen, A. T. M., Lampe, H. M., Rudolfsen, G., . . . Slagsvold, T. (2012). No Evidence for Pre-Copulatory Sexual Selection on Sperm Length in a Passerine Bird. Public Library of Science.

Lifjeld, Jan T., Terje Laskemoen, Oddmund Kleven, A. Tiril M. Pedersen, Helene M. Lampe, Geir Rudolfsen, Tim Schmoll, و Tore Slagsvold. No Evidence for Pre-Copulatory Sexual Selection On Sperm Length in a Passerine Bird. Public Library of Science, 2012.

Lifjeld, Jan T., et al. No Evidence for Pre-Copulatory Sexual Selection On Sperm Length in a Passerine Bird. Public Library of Science, 2012.