@article {Should1967,
title = {Should Behaviouristic Equation in Time Series be Computed in Terms of Absolute Level Variables or their Deltas?},
year = {1967},
url = {https://www.esri.ie/publications/should-behaviouristic-equation-in-time-series-be-computed-in-terms-of-absolute-level-variables-or-their-deltas},
author = {Geary, Roy C},
journal = {Memorandum Series 45},
}