Citation
Sehnal F., Habuštová O., Spitzer L., Hussein H. M. & Růžička V. (2004): A biannual study on the environmental impact of Bt-maize.In Romeis J. & Bigler F. (eds), Ecological Impact of the Genetically Modified Organisms. IOBC/WPRS Bulletin 27 (3): 147–160.