William E. Howden. Solution plans and interactive problem solving. Computers & Graphics, 1(1):21-26, 1975. [doi]
@article{Howden75,
title = {Solution plans and interactive problem solving},
author = {William E. Howden},
year = {1975},
doi = {10.1016/0097-8493(75)90028-X},
url = {http://dx.doi.org/10.1016/0097-8493(75)90028-X},
tags = {e-science},
researchr = {https://researchr.org/publication/Howden75},
cites = {0},
citedby = {0},
journal = {Computers & Graphics},
volume = {1},
number = {1},
pages = {21-26},
}