- "Buchanan Clubs," Constitutional Political Economy,
Vol. 24, No. 4, December 2013, - Open Access -
- "Foreign Direct Investment, Aid, and Terrorism," (with Subhayu
Bandyopadhyay and Javed Younas), Oxford Economic Papers, Vol.
66, No. 1, January 2014, - Open Access - http://oep.oxfordjournals.org/cgi/reprint/gpt026?ijkey=Bz5X0bHrEBQ3aNW&keytype=ref
- "Remittances and Terrorism: A Global Analysis," (with Raechelle
Mascarenhas), Defence and Peace Economics, Vol. 25, No. 4, August
- Open Access Link - http://www.tandfonline.com/doi/pdf/10.1080/10242694.2013.824676
- "An Empirical Analysis of Alternative Ways That Terrorist Groups
End," (with Khusrav Gaibulloev), Public Choice, Vol. 160,
No. 1-2, July 2014, - Open Access - http://www.springer.com/alert/urltracking.do?id=L4084498Md90610Sab23056
- "The Analytical Study of Terrorism:
Taking Stock," Journal of Peace Research, Vol 51(2), March
2014. - Open Access Link - http://jpr.sagepub.com/content/early/2014/01/24/0022343313491277.full.pdf+html
- "Immigration Policy and Counterterrorism,"
(with Subhayu Bandyopadhyay), Journal of Public Economics, Vol.
110, February 2014. - Open Access Link - http://www.sciencedirect.com/science/article/pii/S0047272713002557
- "Dynamic Panel Analysis under Cross-Sectional Dependence,"
(with Khusrav Gaibulloev and Donggyu Sul), Political Analysis,
Vol.22, No. 2, April 2014.
- Open Access Link - http://pan.oxfordjournals.org/content/22/2/258.full.pdf+html
- "Of Nickell Bias, Cross-Sectional
Dependence, and Their Cures: Reply," (with Khusrav Gaibulloev and
Donggyu Sul), Political Analysis, Vol. 22, No. 2, April 2014.
- Open Access Link - http://pan.oxfordjournals.org/cgi/reprint/mpu005?ijkey=mpDw4bz8MX78LqU&keytype=ref
- "The Changing Nonlinear Relationship between Income and Terrorism,"
(with Walter Enders and Gary A. Hoover), Journal of Conflict Resolution,
- Open Access Link - http://jcr.sagepub.com/content/early/2014/05/26/0022002714535252.full.pdf