@article {1900AJ.....21....1E,
	title = {Systematic corrections to observed north-polar distances deduced from reflection observations at Greenwich},
	journal = {\aj},
	volume = {21},
	year = {1900},
	month = {apr},
	pages = {1-8},
	doi = {10.1086/103218},
	author = {Eastman, J.~R.}
}
