The phrase "a matter of further" is not complete on its own, but it can be correct and usable in written English when part of a larger context.
You can use it when discussing additional considerations or topics that require further exploration or discussion.
Example: "This is a matter of further investigation to determine the underlying causes of the issue."
Alternatives: "a question of additional" or "a topic for further".
It is a matter of further investigation".
It is a matter of further interpretations.
The mobility of the dust is a matter of further detailed examination.
The assessment of life of the nano lubricant with Cu and TiO2 in terms of total mileage is still a matter of further examination.
As per the common convention, this difference should not be more than ±25 % in the fracture test which is a matter of further investigation.
In other words, to perceive and accept a first idea of the theory of evolution without necessarily comprehending the total mechanism, which is a matter of further research.
Yet, as Bart Kahr points out in a News & Views on page 21, pinning down the actual mechanism among the various possibilities is mostly a matter of assembling further insight.
Leaders of the various caucuses met on Thursday and decided that the chamber's civil liberties committee "will address the situation in Hungary as a matter of urgency, further to the statement by prime minister Viktor Orbán about a possible restoration of the death penalty and the preparation of a questionnaire designed to encourage Hungarian citizens to state positions on immigration questions".
This going through and beyond, moreover, would not simply be a matter of going further down the road of linear progress; it would entail a hermeneutical as well as ultimately a (me)ontological and existential re-gress, a radical "step back".
As a matter of fact, further evidence that time restriction was indeed the main issue can also be found in the fact that the higher resolution (up to degree and order 45, with a SV up to degree and order 13) model derived from the same ASM-V data in a very similar way by Hulot et al. (2015b), but with just a month and a half more ASM-V data, no longer is plagued by as strong limitations.
It is a matter of foregoing further medical attempts to prolong the duration of one's life through medical interventions.
