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Crost, Benjamin and Shankar, Bhavani (2008) 'Bt cotton and production risk: panel data evidence.' International Journal of Biotechnology, 10 (2/3). pp. 122-131.
Crost, Benjamin, Shankar, Bhavani, Bennett, Richard and Morse, Steven (2007) 'Bias from Farmer Self-Selection in GM Crop Productivity Estimates: Evidence from Indian Data.' Journal of Agricultural Economics, 58 (1). pp. 24-36.