1967/1-2, 3-4; 1968/1-2, 4, 5-6, 7-8; 1969/1-4; 1970/1-4; 1971/1-3; 1972/1-4; 1973/1-4; 1974/1-4; 1975/1-4; 1976/1-2; 1978/4;