- Is sleep’s ‘supreme mystery’ unraveling? An evolutionary analysis of sleep encounters no mystery; nor does life’s earliest sleep, recently discovered in jellyfish. Medical Hypotheses, 66(1), 3-9. (2006).
- Science Daily - Which came first, sleep or the brain? (https://www.sciencedaily.com/releases/2021/01/210108111055.htm)
- No Brain? For Jellyfish, No Problem (https://www.pbs.org/wnet/nature/blog/no-brain-for-jellyfish-no-problem)