'established forms of' is correct and usable in written English.
You can use this phrase to refer to something that has been accepted as normal or standard for a long time. For example, "We must adhere to the established forms of communication when dealing with clients."
Do these networks reproduce established forms of patron-client relations or do they translate into new modes and mechanisms?
Poetry ranged between traditional types of verse and experimental writing that departed radically from the established forms of the 19th century.
He be-came rich as well as famous, and only when all the established forms of exploitation were exhausted did he come to the opposition newspaper, El Espectador.
Models and prototypes are therefore more likely to be found among the unaffiliated God-consecrated women from earlier periods than in established forms of eremitism or monasticism.
The most common already established forms of interaction are direct and dyadic, and limited to domesticated animals such as working dogs and pets.
They are a small but growing fraction of the 150,000 offenders in the United States who are subject to more established forms of electronic supervision like home monitoring systems and mandatory telephone checks.
But what would it look like if we transplanted this established form of protest into the digital age?
Indirect anchorage is an established form of anchorage provided by orthodontic miniscrews.
"Turn-based RPGs are an established form of entertainment, and just like puzzle games never died out, I believe that turn-based RPGs will continue to exist".
Before long, behaviour therapy became an established form of treatment that included exposure-based strategies, techniques based on classical and operant conditioning, and other strategies aimed at directly changing problem behaviours.
Q methodology, an established form of discourse analysis, was therefore undertaken in order to explore the competing visions and perspectives of experts working in the radical technological field of hydrogen production from waste.
