The phrase "authors claimed it is" is correct and usable in written English.
You can use it when referring to a statement or assertion made by authors in a scholarly or research context.
Example: "In their study, the authors claimed it is essential to consider environmental factors in urban planning."
Alternatives: "the authors asserted it is" or "the authors stated it is".
Its authors claim it is the most comprehensive analysis to date on the subject.
The authors claim it is able to run MapReduce jobs on XtremWeb [10], over the Internet.
The authors claim it is likely that the blood vessels carrying α-SMA+ pericytes present within resistant tumors are derived from co-opted blood vessels.
Ali's narrator asks: "Was this the first critical entry by the art world?" Perhaps not, but the author claims it is "the first criticism of Obama in a work of fiction.
Not as high in the ranking as the E Newss reporter interviewing James would say that night before introducing the author (she claimed it was at No. 11, which might've been true on Monday, but definitely isn't now), but still pretty impressive for an instrumental album (it's beating out the 2 Chainz record).
Today in Ohio @BarackObama cited a study authored by a former staffer, claimed it wasn't written by "my staff".
That is in itself remarkable; the author Fred Pearce claims it is possible that half of all the humans who have ever been over 65 are alive today.
The basis of this recommendation is not clear, although some authors claim it to be due to poor concordance between ELISA and other serological tests,[ 22- 25] and others claim it is due to limited specificity [ 2].
Author Michael Reynolds claims it was during this period that Hemingway slid into depression, from which he was unable to recover.
If morphology is truly the main difference, as the authors claim, it should still be true that the chimeric model shows better D spike propagation in CA2 than in CA1, despite the reversal of the conductances in the two models.
