Spisanie. Zeitschrift der Bulgarischen geologischen Gesellschaft. Review of the Bulgarian Geological Society.

v.1-4 (1927-32); v.5-8 (1933-36); v.9-10 (1937-38); v.11-12 (1939-40); v.13 (1941); v.14 (1942); v.21-22 (1960-61); v.23-24 (1962-63); v.25-26 (1964-65); v.25-27 1964-1966; v.27-29 (1966-68); v.28-30 1967-1969; v.30 (1969); v.31 1970; v.32 (1971); v.32-33 1971-1972; v.33-34 (1972-73); v.34-35 1973-1974; v.35-36; v.36-37 1975-1976; v.37-38; v.38-39 1977-1978; v.39-40; v.40-41 1979-80; v.41-42; v.42 1981; v.43-44; v.43 1982 no.3; v.44 1983; v.45-46; v.45 1984; v.46 1985; v.47; v.47 1986; v.48 1987; v.49 1988; v.50 1989; v.51 1990; v.52 1991; v.53 1992; v.54 1993; v.55 1994; v.57-58 1996-1997; v.59-61 1998-2000