Ribarov, G. (1985): Contribution à la connaissance des Lithobiomorpha (Chilopoda) en Bulgarie Sud-Est. Bull. Musées Bulgarie S.-E., 5: 217-226.
Ribarov, G. (1987): Vidov sstav, ekologija, razprostranenie i značenie na mnogonožkite Lithobiomorpha (Chilopoda) Strandža i Sakar. Strandžansko-Sakarski sbornik, 4: 279-287.
Ribarov, G. (1992): The distribution of the centipedes of the genera Harpolithobius and Eupolybothrus in Bulgaria. Ber. nat.-med. Verein, Innsbruck, Suppl. 10: 361-365.
Ribarov, G. (1996):Check-List, distribution and habitat in bulgarian centipedes. In: Geoffroy, J.-J., Mauries, J.-P., Nguyen Duy-Jacquemin, M., (eds.): Acta Myriapodologica. Mém. Mus. natn. Hist. nat., 169: 235-241.
Ribarov, G.K. (1986): A contribution to the study of Geophilomorpha (Chilopoda) from the south-eastern Bulgaria. Travauv scientifiques de Universite de Plovcdiv 'Paissi Hilendarski', 24: 155-160.