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@article{BNYMS_1893__2_186493, author = {W. Woolsey Johnson}, title = {On {Peter's} {Formula} for {Probable} {Error.}}, journal = {Bulletin of the New York Mathematical Society}, pages = {57--61}, publisher = {mathdoc}, volume = {2}, year = {1893}, zbl = {24.0208.01}, url = {http://geodesic.mathdoc.fr/item/BNYMS_1893__2_186493/} }
W. Woolsey Johnson. On Peter's Formula for Probable Error.. Bulletin of the New York Mathematical Society, Tome 2 (1893), pp. 57-61. http://geodesic.mathdoc.fr/item/BNYMS_1893__2_186493/