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Balances and transactions with related parties: (Details 1) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Commercial income: |  |  |
Revenue | $ 15,410,241 | $ 12,589,818 | $ 9,753,491
Stockholders: |  |  |
Technical assistance (Note 13.4) | (386,249) | (346,487) | (288,111)
Related parties: |  |  |
Leasing | 5,232 | 5,019 |
Other | (177,330) | (144,322) | (114,347)
Autobuses de Oriente, S. A. de C. V. [member] |  |  |
Commercial income: |  |  |
Revenue | 14,455 | 11,770 | 9,615
Autobuses Golfo Pacífico, S. A. de C. V [member] |  |  |
Commercial income: |  |  |
Revenue | 7,014 | 6,382 | 5,947
Coordinados de Mexico de Oriente, S. A. de C. V. [member] |  |  |
Commercial income: |  |  |
Revenue | 150 | 139 | 134
Aerostar [member] |  |  |
Interest income: |  |  |
Aerostar (joint venture) (Note 8) |  | 69,202 | 83,483
Related parties [member] |  |  |
Related parties: |  |  |
Leasing | (5,232) | (5,019) | (4,825)
Cleaning services | $ (10,854) | (10,239) | (9,541)
Other |  | $ (598) | $ (2,473)

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