@article {5066,
	title = {A Constant Daylength During the Precambrian Era?},
	journal = {Precambrian Research},
	volume = {37},
	year = {1987},
	pages = {95{\textendash}105},
	doi = {10.1016/0301-9268(87)90073-8},
	url = {https://www.sciencedirect.com/science/article/abs/pii/0301926887900738},
	author = {Zahnle, Kevin and Walker, James C.G.}
}
