Ficker's numerous and important works extend over three branches of scientific history: political and legal history and the science of
diplomatics. In each division he discovered new methods of investigation. Among his writings those of especial note are:
Political history • (Cologne, 1850) • (Münster, 1851) • (Cologne, 1853) • (Vienna, 1855).
Legal history • (Vienna, 1857) • (Innsbruck 1859) • (Innsbruck, 1861) • (4 vols., Innsbruck, 1868–74) • (3 vols., Innsbruck, 1891–97).
Diplomatics • (2 vols., Innsbruck, 1877–78). ==References==