@article {Can1968,
title = {Can Cause and Effect be Distinguished by Simple Regression (June 1968, revised August 1968). Regression (5 April 1967)},
year = {1968},
url = {https://www.esri.ie/publications/can-cause-and-effect-be-distinguished-by-simple-regression-june-1968-revised-august-1968-regression-5-april-1967},
author = {Geary, Roy C},
journal = {Memorandum Series 50},
}