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Balances and transactions with related parties: (Details 1) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Commercial income: |  |  |
Revenue | $ 12,589,818 | $ 9,753,491 | $ 8,994,597
Stockholders: |  |  |
Technical assistance (Note 13.4) | (346,487) | (288,111) | (239,175)
Related parties: |  |  |
Administrative services | 204,418 | 204,843 | 196,990
Leasing | 5,019 | 4,825 | 4,084
Other | 144,322 | 114,347 | 84,852
Autobuses de Oriente, S. A. de C. V. [member] |  |  |
Commercial income: |  |  |
Revenue | 11,770 | 9,615 | 8,274
Autobuses Golfo Pacífico, S. A. de C. V [member] |  |  |
Commercial income: |  |  |
Revenue | 6,382 | 5,947 | 5,560
Coordinados de Mexico de Oriente, S. A. de C. V. [member] |  |  |
Commercial income: |  |  |
Revenue | 139 | 134 | 141
Aerostar [member] |  |  |
Interest income: |  |  |
Aerostar (joint venture) (Note 8) | 69,202 | 83,483 | 65,705
Related parties [member] |  |  |
Related parties: |  |  |
Administrative services |  |  |
Leasing | (5,019) | (4,825) | (4,084)
Cleaning services | (10,239) | (9,541) | (9,084)
Other | $ (598) | $ (2,473) | $ (1,006)

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