@article{freitas_2013,  title={Aviation war risk insurance and its impacts on US passenger aviation},  volume={7},  ISSN={2238-1031},  url={https://www.scielo.br/j/jtl/a/sRcTLfWL55FsdXWty636FwP/},  number={2},  journal={Journal of Transport Literature},  publisher={Sociedade Brasileira de Planejamento dos Transportes},  author={Freitas, Paul J.},  year={2013},  month={Apr},  pages={268–283} }