"Party Program for Defense," Otechestven Front, Sofia, July 8, 1971. (JPRS: 53,641, No. 386, 1971).
"People's Councils Legal Departments," Durzhaven Vestnik, Sofia, March 6, 1970. (JPRS 50,415, No. 210, 1970).
"Pre-Induction Military Training Reorganized," Narodna Armiya, Sofia, August 8, 1968. (JPRS: 46,551, No. 31, 1968).
"Provisions for Servicemen, Families," Narodna Armiya, Sofia, February 8, 1973. (JPRS: 58,336, No. 676, 1973).
"Regulations on Obshtina Militia," Durzhaven Vestnik, Sofia, May 12, 1970. (JPRS: 50,920, No. 236, 1970).
"Scientific Training for Youth," Durzhaven Vestnik, Sofia, December 6, 1968. (JPRS: 47,136, No. 56, 1968).
"Significance of CEMA Defense Programs," Narodna Armiya, Sofia, September 22, 1971. (JPRS: 54,261, No. 549, 1971).
"Winter Defense Exercise," Armeyski Pregled, Sofia, December 1969. (JPRS: 49,929, No. 187, 1970).
Wolff, Robert Lee. The Balkans in Our Time. Cambridge: Harvard University Press, 1956.