The phrase "are further indications" is correct and usable in written English.
It can be used when discussing additional evidence or signs that support a particular conclusion or observation.
Example: "The recent survey results are further indications of the growing concern among the population regarding climate change."
Alternatives: "are additional signs" or "represent further evidence."
But there are further indications of the difficulties Mr. Monti faces in what is already a struggle to change the economy.
The specialised roles of quality assurance, customer service and support, and dispute resolution that are provided for in these sites are further indications of the importance of customer satisfaction for this business model.
Although the available data does not allow a clear conclusion, these observations are further indications that some of Canada's volcanoes are potentially active, and that their associated hazards may be significant.
Numerous inscriptions discovered in Dumah itself are further indications for a strong Qedarite presence, one of which asks of three deities known to the Assyrians as gods of Qedar (Ruda, Nuha and Atarsamain) for "help in the matter of my love".
In addition, there are further indications of previous gene duplication and deletion events in the L. wollei PST biosynthesis gene cluster.
There are further indications that chronically ill patients may require individually tailored antidepressant treatment [ 59].
The remarks are further indication that Trump is reversing his previous stance on illegal immigration, after a meeting with Latino Republicans over the weekend led multiple outlets to report that Trump had vowed to move beyond his pledge to deport all undocumented immigrants from the country.
There have been further indications that Mueller could have thrown more at Flynn if he wasn't getting something valuable from him.
The kidnapping and the intensified fighting on Sunday in both Damascus, the capital, and Aleppo, where rebels and reporters inside the city said that Syrian jets were dropping bombs, were further indications of what analysts described as a widening war.
On Monday, there were further indications that Abdelhamid Abu Zeid, a leader of Al Qaeda in the Islamic Maghreb, had been killed last week in northern Mali, in the Adrar des Ifoghas mountains, where French and Chadian troops were hunting down Islamist fighters.
In economic news, there were further indications that the economic recovery in Europe was becoming sluggish.
