Wolfgang Hackbusch. On first and second order box schemes. Computing, 41(4):277-296, 1989. [doi]
@article{Hackbusch89,
title = {On first and second order box schemes},
author = {Wolfgang Hackbusch},
year = {1989},
doi = {10.1007/BF02241218},
url = {http://dx.doi.org/10.1007/BF02241218},
researchr = {https://researchr.org/publication/Hackbusch89},
cites = {0},
citedby = {0},
journal = {Computing},
volume = {41},
number = {4},
pages = {277-296},
}