Rusev, I. More about the First Factoty in the Bulgarian Lands'. Sofia: Institute for Historical Research at the BAS, 1995 pp. 69-82, ISSN 0204-8906.
Rusev, I. More about the First Factoty in the Bulgarian Lands'. Sofia: Institute for Historical Research at the BAS, 1995 pp. 69-82, ISSN 0204-8906.
Rusev, I. (1995) More about the First Factoty in the Bulgarian Lands', Sofia: Institute for Historical Research at the BAS pp. 69-82, ISSN 0204-8906.
Rusev, I. (1995). More about the First Factoty in the Bulgarian Lands'. Sofia: Institute for Historical Research at the BAS, pp. 69-82.
Rusev I. More about the First Factoty in the Bulgarian Lands'. Sofia: Institute for Historical Research at the BAS; 1995. p. pp. 69-82. ISBN: ISSN 0204-8906.
