"a string of studies" is a valid and commonly-used phrase in written English.
It is typically used to refer to several related investigations or researches. For example, "This new analysis is the latest in a string of studies on the effects of climate change."
Psychologists have conducted a string of studies of Olympians' transition to working life.
In the past 18 months a string of studies has undermined the reputation of HRT.
That is about half the risk that a string of studies since 1997 found, the researchers said.
A string of studies have documented the curriculum's narrowing since Mr. Bush signed the law in January 2002.
Over the past few years, a string of studies have consistently warned of rising obesity rates in India.
Over the last decade, a string of studies have matched discharged ex-felons to voter registration files in the states where they're permitted to vote.
A string of subsequent studies (and a meta-study of 31 other papers) found nothing to suggest that MMR has anything to do with autism.
Afterward (her six-volume memoir takes her only to age 40), Ms. Angelou was a Tony-nominated stage actress; college professor (she was for many years the Reynolds professor of American studies at Wake Forest University in Winston-Salem); ubiquitous presence on the lecture circuit; frequent guest on television shows from "Oprah" to "Sesame Street"; and subject of a string of scholarly studies.
A string of academic studies labelled DARE pointless at best.
Computer models predict that this effect will weaken as the world warms, and a string of recent studies suggests this is happening already.
In 2001, the year the law was drafted, one of the first of a string of revisionist studies argued that the nation's schools were losing more students than previously thought.
