@article{4799,
  author = {Leonid Grishchuk and M. Solokhin},
  title = {Spectra of relic gravitons and the early history of the Hubble parameter},
  year = {1991},
  journal = {Physical Review D},
  volume = {43},
  pages = {2566-2571},
  month = {Jan-04-1991},
  issn = {0556-2821},
  url = {http://link.aps.org/doi/10.1103/PhysRevD.43.2566},
  doi = {10.1103/PhysRevD.43.2566},
}