The phrase 'philosophical works' is correct and usable in written English.
Here is an example sentence: I am particularly fond of reading philosophical works written by ancient Greek philosophers.
All these great physicians, he argues, were really philosophers who wrote important philosophical works.
Norris wrote numerous theological and philosophical works.
Crousaz wrote numerous mathematical and philosophical works.
Haldane translated philosophical works by G.W.F.
Yet in his philosophical works he gives an unsought pleasure.
Important philosophical works were attributed to Hermes Trismegistos.
Plato then grew up and wrote philosophical works.
Philosophical works constitute a large percentage of the total compilation.
For this reason, his philosophical works were closely connected to his historical studies.
The technical philosophical works were written by humbler men and are now lost.
On Bolingbroke's advice he learned English in order to read the philosophical works of John Locke.
