Joseph C. Culberson, Robert A. Reckhow. Covering Polygons Is Hard. J. Algorithms, 17(1):2-44, 1994.
@article{CulbersonR94, title = {Covering Polygons Is Hard}, author = {Joseph C. Culberson and Robert A. Reckhow}, year = {1994}, tags = {C++}, researchr = {https://researchr.org/publication/CulbersonR94}, cites = {0}, citedby = {0}, journal = {J. Algorithms}, volume = {17}, number = {1}, pages = {2-44}, }