共 24 条
[1]
Ankita Kandpal Ankita Kandpal, 2015, Agricultural Economics Research Review, V28, P139, DOI 10.5958/0974-0279.2015.00011.7
[2]
Archana Suman, 2014, J. Intell. Property Rights, V19, P260
[9]
Hall BH, 2005, RAND J ECON, V36, P16