Complex sentence: Of Martens' original works his "International Law of Civilised Nations" is perhaps the best known; it was written in Russian, a German edition appearing in 1884--1885, and a French edition in 1883-1887.
Split into simpler sentences: Of Martens' original works his "International Law of Civilised Nations" is perhaps the best known. It was written in Russian, a German edition appearing in 1884--1885, and a French edition in 1883-1887.