open skies

v.

开放领空；

Open Skies
OPEN SKIES
Open Skies in ASEAN
Open skies vitrectomy
Effect of open skies in the Middle East region
The impact of the EU–US Open Skies agreement on international travel and carbon dioxide emissions
Aviation and the environment in the context of the EU–US Open Skies agreement
Competition regimes and air transport costs: The effects of open skies agreements
A panel data analysis of code-sharing, antitrust immunity, and open skies treaties in international aviation markets.
Framing the discussion on regulatory liberalisation: a stakeholder analysis of Open Skies, ownership and control