The phrase "well-established cooperation" is correct and usable in written English.
You can use it to describe an ongoing arrangement between two or more parties that have been working together for a long period of time. For example: "The two companies have a well-established cooperation that has lasted for over five years."
"It sacrifices deep and well-established cooperation on Israel for short-term partisan points – something that should never be done with Israeli security and which we fear could have lasting repercussions," the senators said in the letter.
Despite of a well-established cooperation in the local gastroenterological field, our results showed improvement options in the treatment of IBD-patients.
Let me conclude by expressing our sincere hope that through further constructive discussions we can achieve tangible progress on the various challenges -, including the full implementation of the agreement between Iran and its international partners, the Joint Comprehensive Plan of Action - and start a new round of well-established cooperation.
The mental health services in the two counties are almost exclusively public, with well-established structures for cooperation on patient admission and follow-up.
Increased sales costs of vaccines have a variety of negative consequences; in particular, this increase could put at risk well-established mechanisms of international cooperation in global infectious disease surveillance.
"Transnational" and "international cooperation" imply a global alignment on internet issues that simply doesn't exist, though I'm sure the well-established channels of international police cooperation function as advertised.
The development of multi-physics multi-scale coupled methodologies for Light Water Reactor (LWR) analysis requires comprehensive validation and verification procedures, which include well-established benchmarks developed in international cooperation.
Regarding cooperation with local and foreign organizations, public donors often have well-established relationships with particular developing countries that provide a basis for dialogue and cooperation, written down in official country agreements [ 37].
Configurational arrangement of network architecture and interaction character of individuals are two most influential factors on the mechanisms underlying the evolutionary outcome of cooperation, which is explained by the well-established framework of evolutionary game theory.
A well-established theoretical framework for the evolution of cooperative interactions contrasts "partner fidelity" and "partner choice" as the most important mechanisms promoting and maintaining cooperation.
We first tested for cooperation between miR-8 and Cpb using a well-established trans-heterozygous complementation assay for dose-dependent genetic interaction.
