The phrase 'under mutual agreement' is correct and usable in written English. You can use it to refer to any arrangement that exists between two or more parties in which they mutually agree upon something. For example: "After 3 months of negotiations, the two companies finally reached a contract under mutual agreement.".
The five members of the committee will be initially appointed by News Corp. and Dow Jones under mutual agreement, although few observers expect the committee to prevent Murdoch from ultimately wielding influence over the Journal newsroom.
According to the BSA, US combat operations would only occur under mutual agreement by both the Americans and the Afghans.
Since defectors are never able to establish social ties under mutual agreement, they are overall swifter than cooperators, who tend to evolve stable and long term relations when the risk of exploitation is absent.
Since defectors are never able to establish social ties under mutual agreement, they break adverse ties more rapidly than cooperators, who tend to evolve stable and long-term relations.
Chevy Chase is leaving the NBC sitcom "Community" under a mutual agreement with the producers and will not appear in the final episodes of the season, Sony Pictures Television said on Wednesday.
In November, Ralph Cioffee left Bear Stearns under a "mutual agreement".
The lawsuit is on hold under a mutual agreement among the three parties until coastal commissioners hear the issue, Boardman said.
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Retail Lead Linguist @ Apple Inc.