1. ADLER, S, INDIAN JOURNAL OF MEDICAL RESEARCH 29: 803 (1941).
2. BATTISTINI, T, REV SUD AM MED CHIR 2: 719 (1931).
3. CONOCIMIENTO TIEMPOS 1764
4. CASALS, J, VIRAL RICKETTSIAL IN: 663 (1965).
5. GOONERATNE, B.W., A REMARKABLE DESCRIPTION OF ALEPPO-BOIL IN 1839, TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE 64: 197 (1970).