RT Article T1 Modeling the origin of urban-output scaling laws JF Physical review VO 100 A1 Yang, V.C. A1 Abrams, Daniel M. A1 Papachristos, Andrew V. A2 Abrams, Daniel M. A2 Papachristos, Andrew V. LA English YR 2019 UL https://krimdok.uni-tuebingen.de/Record/1912623994 DO 10.1103/PhysRevE.100.032306