@Article{ SarSar18, author = { Saracco, Alberto and Saracco, Giorgio }, title = { A discrete districting plan }, journal = { Netw. Heterog. Media }, year = { 2019 }, doi = { 10.3934/nhm.2019031 }, volume = { 14 }, number = { 4 }, pages = { 771--788 }, URL = { http://cvgmt.sns.it/paper/4172/ }, note = { cvgmt preprint} }