The phrase "authoritative knowledge of" is correct and usable in written English.
It can be used when discussing a recognized or accepted understanding or expertise in a particular field or subject.
Example: "The researcher presented her authoritative knowledge of climate change during the conference."
Alternatives: "expert understanding of" or "recognized expertise in".
Nicknamed the Mayor of Greenwich Village in deference to his authoritative knowledge of jazz and blues, Mr. Van Ronk was an influential performer for four decades.
But an investigation by the environmental advocacy group Greenpeace and accounts by two experts with authoritative knowledge of what happened make a compelling case for an alternative account.
Al-Ḥarīrī's Maqāmāt seems to unite his experiences as an information officer with his authoritative knowledge of Arabic grammar, style, and verse.
Whether or not Almodóvar can claim authoritative knowledge of how young women behave today, he certainly knows what he's talking about with regard to Iberian subcultural history – for cinemagoers around the world, his name is synonymous with 80s Spain and its mores.
But Ms. Schiff seems to have inhaled everything there is to know about Cleopatra and her times, and she uses her authoritative knowledge of the era — and her instinctive understanding of her central players — to assess shrewdly probable and possible motives and outcomes.
But his intimate understanding of his characters and his authoritative knowledge of the legal world inject the narrative with emotional fuel, creating suspense that has less to do with the actual twists and turns of the plot than with our interest in what will happen to these people and how they will behave under pressure.
His firsthand "authoritative" knowledge on the subject is flimsy AT BEST.
Mr. Bicket has brought his authoritative knowledge to the entire project.
It was quickly adopted on the basis of authoritative knowledge rather than evidence of its own capacity to improve the efficiency and equity of health systems.
Sometimes I think these pretenses at authoritative knowledge are failures of language: the language of bold assertion is simpler, less taxing, than the language of nuance and ambiguity and speculation.
In this connection, we may note that Mīmāṃsā and other systems of Hindu philosophy developed a notion of linguistic expression as one of the sources of authoritative knowledge (śabdapramāṇa), when other more basic sources of knowledge like sense perception (pratyakṣa) and inference (anumāna) are not available.
