The phrase "authors warn that" is correct and usable in written English.
It can be used when introducing a caution or alert from authors regarding a specific issue or topic.
Example: "In their recent study, the authors warn that climate change could lead to severe consequences for biodiversity."
Alternatives: "authors caution that" or "authors indicate that".
The authors warn that it might not be enough.
The authors warn that some other climate change effects will be global.
But the authors warn that depending on these advances as a "panacea" for disaster efforts is a short-sighted mistake.
The authors warn that it will add red tape and expense to the process of making radio content.
That authors warn that failing to aggressively address the issue could be costly in the long term.
The authors warn that in such cases, "share ownership may be largely a result of the company's superior performance, rather than a cause".
A Farewell to Truth, by Gianni Vattimo, translated by William McCuaig (Columbia, £17) A more nuanced treatment, here, of the social construction of reality: the inaccessibility of any perspectiveless truth that is not "produced" by human practices does not imply, the author warns, that "anything goes"; instead, it obliges us to come to reasoned agreement.
The authors warned that when some people increase their level of physical activity, they compensate by eating more.
The authors warned that problems in the landesbanks threatened the hundreds of savings banks, or sparkassen, which dominate consumer banking in Germany and are crucial to the economy.
The authors warned that if the government failed to address the problem, the UK would no longer remain globally competitive in these fields.
The authors warned that rising inequality could indicate a recession was on the way, with the global wealth-to-income ratio hitting a peak.
