Zohar Manna, Richard J. Waldinger. How to Clear a Block: A Theory of Plans. Journal of Automated Reasoning, 3(4):343-377, 1987.
@article{MannaW87:0, title = {How to Clear a Block: A Theory of Plans}, author = {Zohar Manna and Richard J. Waldinger}, year = {1987}, researchr = {https://researchr.org/publication/MannaW87%3A0}, cites = {0}, citedby = {0}, journal = {Journal of Automated Reasoning}, volume = {3}, number = {4}, pages = {343-377}, }