Werner Purgathofer. A statistical method for adaptive stochastic sampling. Computers & Graphics, 11(2):157-162, 1987. [doi]
@article{Purgathofer87a,
title = {A statistical method for adaptive stochastic sampling},
author = {Werner Purgathofer},
year = {1987},
doi = {10.1016/0097-8493(87)90029-X},
url = {http://dx.doi.org/10.1016/0097-8493(87)90029-X},
researchr = {https://researchr.org/publication/Purgathofer87a},
cites = {0},
citedby = {0},
journal = {Computers & Graphics},
volume = {11},
number = {2},
pages = {157-162},
}