D. C. Moffat, Graeme D. Ritchie. Modal queries about partially-ordered plans. J. Exp. Theor. Artif. Intell., 2(4):341-368, 1990. [doi]
@article{MoffatR90,
title = {Modal queries about partially-ordered plans},
author = {D. C. Moffat and Graeme D. Ritchie},
year = {1990},
doi = {10.1080/09528139008953731},
url = {http://dx.doi.org/10.1080/09528139008953731},
researchr = {https://researchr.org/publication/MoffatR90},
cites = {0},
citedby = {0},
journal = {J. Exp. Theor. Artif. Intell.},
volume = {2},
number = {4},
pages = {341-368},
}