@article{maehara2015valuated, author = {Takanori Maehara and Kazuo Murota}, title = {Valuated matroid-based algorithm for submodular welfare problem}, journal = {Annals of Operations Research}, volume = {229}, number = {1}, pages = {565--590}, year = {2015}, month = {June}, url = {https://doi.org/10.1007/s10479-015-1835-3}, }