1. The comparative DNA content of 19 species of placental mammals, reptiles and birds;Atkin;Chromosoma,1965
2. Genome size in birds;Bachmann;Chromosoma,1972
3. Chromosome Atlas: Fish, Amphibians, Reptiles and Birds;Benirschke,1971
4. Chromosome Atlas: Fish, Amphibians, Reptiles and Birds;Benirschke,1971
5. Karyotype analysis in ornithological studies;Calafati,1981