There are a few books out there which will help you understand the science behind compost human waste if you really want to…
The Humanure Handbook by Joseph Jenkins is a classic that will go into great detail about the science behind composting. It’s based on composting both urine and faeces together, so not 100% appropriate for urine-separating or dry compost toilets, but still a mine of information.
Liquid Gold is all about the best way to capture, store and use urine as a fertiliser. It covers the basic science plus loads of advice and anecdotes!