1. Bohr VH (1987) Preferential DNA repair in active genes. Laegeforeningens Forlag, Koben-havn, pp 1?27
2. Fender H (1979) Sedimentationsuntersuchungen an chromosomaler Säuger DNS. Dissertation A, Akademie der Wissenschaften der DDR
3. Friedberg EC, Backensdorf C, Burke J, Collins A, Grossman L, Hoeijmakers JHJ, Lehmann AR, Seeberg E, Schans GF van der, Zeeland AA van (1987) Molecular aspects of DNA repair. Mutat Res 184:67?76
4. Graffi A, Butschak G, Schulze B, Schneiders F (1985) Unpublished results
5. Hartwig M, Matthes E, Arnold W (1981) Extremely underwound chromosomal DNA in nucleoids of mouse sarcoma cells. Cancer Lett 13:153?158