The Relationship between Population Dynamics and Urban Hierarchy: Evidence from Portugal
João F. Bigotte, António Antunes, Dmitry Krass, Oded Berman
International Regional Science Review, vol. 37, 2014, p. 149-171.

Integrated Modeling of Urban Hierarchy and Transportation Network Planning
João F. Bigotte, Dmitry Krass, António Pais Antunes, Oded Berman
Transportation Research Part A: Policy And Practice, vol. 44, 2010, p. 506-522.