A simple electrophoretic method for the determination of superhelix density of closed circular DNAs and for observation of their superhelix density heterogeneity.

@article{Espejo1976ASE,
  title={A simple electrophoretic method for the determination of superhelix density of closed circular DNAs and for observation of their superhelix density heterogeneity.},
  author={Romilio T. Espejo and Jacob Lebowitz},
  journal={Analytical biochemistry},
  year={1976},
  volume={72},
  pages={95-103}
}