The phrase "authoritative instrument" is correct and usable in written English.
It can be used in contexts where you refer to a document or tool that has the power to enforce rules or standards.
Example: "The new policy was established as an authoritative instrument to guide the organization's operations."
Alternatives: "official document" or "regulatory tool".
This little-noticed leap second was a crude solution to a problem that began five years earlier, when atomic clocks replaced the rotation of the earth as the authoritative instrument for measuring time.
The Internal Revenue Bulletin, which is published weekly, is the "authoritative instrument" for IRS to post official rulings and procedures as well as Treasury Decisions, Executive Orders, Tax Conventions, legislation, court decisions, and other items of general interest.
Governments that face simple actor settings are able to directly influence actor behavior, and are therefore more likely to resort to authoritative policy instruments [ 7].
Thus, different strands of regulation studies share an agreement on the subject of regulation (the state), the object (the behaviour of nongovernmental actors), the instruments (an authoritative set of rules), or the domain of application (e.g., the economy).
Steve, the skipper, silent and authoritative, looks at his navigation instruments.
The performances of all of these were those of an organist whose skill extended beyond the playing of the notes to authoritative control of a very large instrument in a vast echoing space.
Alice Neary's performance was exemplary, always authoritative in the interaction with other instruments and, most memorably, investing the passage where her arpeggiated cello line was mirrored in gentle pizzicato by the orchestral cellists with a misty, ethereal quality.
The selling point of the new "Lucia di Lammermoor" (Sony Classical S2K 63174; two CD's) is that it is the first recorded performance on period instruments, and the first using an authoritative edition of the score that restores Donizetti's original key scheme.
As Steve Jobs said, I had to think differently - so I found solutions based on the acoustics of musical instruments, based on other technologies, from authoritative sources such as Wikipedia and when I would present my progressto engineers, they say, yeah that could work.
Stravinsky's Symphonies of Wind Instruments was pungent, bright-toned and crisply authoritative rather than elegiac.
It offers the government's most authoritative view to date on whether investors, using specialized instruments known as index funds and commodity swaps, have contributed to the sharp run-up in oil prices since 2002.
