Daskalov, S., Atanassova, B., Balacheva, E. (2007) Genic male sterility in tomato ( Lycopersicon esculentum Mill. ) and pepper ( Capsicum annuum ) and its application in breeding and hybrid seed production = Генна мъжка стерилност при доматите ( Lycopersicon esculentum Mill. ) и пипера ( Capsicum ann, с. 483-487,.