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APA Citation
Ansuategi, A., Galarraga, I., Orea, L., & Standfuss, T. (2019). analysis of cost-effectiveness in the provision of air navigation services at functional air blocks. Competition and regulation in network industries, 20(4), 305–318. http://access.bl.uk/ark:/81055/vdc_100093469814.0x00000c