@article{Padgett1993,
author = {Padgett, J.F. and Ansell, C.K.},
title= {Robust action and the rise of the Medici, 1400-1434},
year = {1993},
doi = {10.1086/230190},
journal = {American Journal of Sociology},
volume = {98},
number = {6},
pages = {1259--1319},
}