Hallmann K & Griebeler EM (2015) Eggshell types and their evolutionary correlation with life-history strategies in Squamates. PLOSone DOI: 10.1371/journal.pone.0138785.
Hallmann (2010) Biogeography of plant traits at a regional scale. Diploma thesis
“Are life-history strategies influenced by eggshell types in squamates?”, PhD student & Postdoc Workshop within the graduate program of the Center for Computational Sciences in Kaub am Rhein (9/2013)