Original: A number of historical novels based on Procopius' works (along with other sources) have been written, one of which, Count Belisarius, was written by poet and novelist Robert Graves in 1938.
Simplified: A number of historical novels based on Procopius' works (along with other sources) have been written, of which the best, Count Belisarius, was written by poet and novelist Robert Graves in 1938.