Ronald Cools, Ann Haegemans. Another step forward in searching for cubature formulae with a minimal number of knots for the square. Computing, 40(2):139-146, 1988. [doi]
@article{CoolsH88,
title = {Another step forward in searching for cubature formulae with a minimal number of knots for the square},
author = {Ronald Cools and Ann Haegemans},
year = {1988},
doi = {10.1007/BF02247942},
url = {http://dx.doi.org/10.1007/BF02247942},
researchr = {https://researchr.org/publication/CoolsH88},
cites = {0},
citedby = {0},
journal = {Computing},
volume = {40},
number = {2},
pages = {139-146},
}