References
Wehr - H. Wehr. A Dictionary of Modern Written Arabic (Arabic-English), ed. by J. Milton Cowan. Fourth Edition. Wiesbaden, 1979
WTS - E. Littmann, M. Höfner. Wörterbuch der Tigre-Sprache. Wiesbaden, 1962
Wranik 2003 - W. Wranik. Fauna of the Soqotra Archipelago. Field Guide. Rostock, 2003