@article {SS19,
	title = {A discrete districting plan},
	journal = {Netw. Heterog. Media},
	volume = {14},
	number = {4},
	year = {2019},
	pages = {771{\textendash}788},
	doi = {10.3934/nhm.2019031},
	author = {Saracco, A. and Saracco, G.}
}
