Barry Fowler, Richard H. Bartels. Constraint-based curve manipulation. IEEE Computer Graphics and Applications, 13(5):43-49, 1993. [doi]
@article{FowlerB93,
title = {Constraint-based curve manipulation},
author = {Barry Fowler and Richard H. Bartels},
year = {1993},
doi = {10.1109/38.232098},
url = {http://doi.ieeecomputersociety.org/10.1109/38.232098},
researchr = {https://researchr.org/publication/FowlerB93},
cites = {0},
citedby = {0},
journal = {IEEE Computer Graphics and Applications},
volume = {13},
number = {5},
pages = {43-49},
}