think i'm getting excited about math again. I read one or two of winfree's books in college, and they were pretty much in the biological part of mathematical biology- but here are _new theorems_ in dynamics motivated by biological oscillations https://doi.org/10.1007/BF01273747
There is essentially no biological content here. New math for the sake of biology is great
(also i know it's 1975. old news. still)