@article {Randomisation1976,
title = {Randomisation and the Von Neumann Function: A Variance Formula and a Problem},
year = {1976},
url = {https://www.esri.ie/publications/randomisation-and-the-von-neumann-function-a-variance-formula-and-a-problem},
author = {Geary, R.},
journal = {Memorandum Series 118},
}