The phrase "are further required" is correct and usable in written English.
It can be used when indicating that additional actions or items are necessary beyond what has already been mentioned.
Example: "To complete the application, several documents are further required, including proof of identity and financial statements."
Alternatives: "are additionally needed" or "are also necessary".
Top managers are further required to retain a percentage of shares resulting from the exercise of stock options until they amass the stipulated number of shares.
Id. at 3. Would-be drivers are further required to pass a "city knowledge test" and attend an interview with an Uber employee.
Insurers are further required to maintain for examination by the applicable insurance regulatory body all records, schedules and data supporting the certification for a period of five years.
In this way, the temperature can only be captured in a few locations within the heated region while a direct tissue contact or an invasive approach are further required.
Mast cell-derived factor stimulated by exogenous SCF could not induce psoriatic epidermis, suggesting that other factors such as activated lymphocytes or macrophages are further required for the development of psoriatic lesions.
Additionally, if higher accuracy is requested, more computer operations are further required to refine the accuracy into sub-pixel level.
A sintering process is further required to convert the green parts into dense ceramic components.
Mr. Boies should be further required to determine whether each dimple was made by a "cat person" or a "dog person".
The resulting candidate is further required to point back to the PV, for example, to have a small impact parameter, consistent with zero, with respect to it.
It may not be further required that every explicit representation correspond to a propositional attitude.
Assessing bioaccumulation is further required for the authorisation of chemicals in many national and international legislative frameworks.
