Notes, Comments and Preliminary results Jul 18 2021 Francis Petterini and Akauã Flores   Copula econometrics to simulate effects of private policing on crime   Abstract  Contact Information  Citation  Full Text  -  Note   May 02 2019 Francis Carlo Petterini and Murilo Pedro Demarchi   Volunteering and firefighters' response time   Abstract  Contact Information  Citation  Full Text  -  Note