Boykin et al 2021 Using a Commercial Gut-loading Diet (Not mentioned in the Boykin abstract is that the mealworms were fasted for 18 hours prior to being transferred to the test diet (Fluker’s High-Calcium Mealworm Diet). During the study, the mealworms were not given any moisture source. They were maintained at 24.4 °C (75.9°F). (pers. comm.))

Finke et al 2004 Improving the Calcium Content of Crickets 

Dierenfeld 2008 Digestibility and Mineral Availability of Phoenix Worms