@book{brown_2001, 
  title={DIRECT ENERGY CONVERSION FISSION REACTOR FOR THE PERIOD JUNE 1, 2001 THROUGH SEPTEMBER 30, 2001}, 
  DOI={10.2172/807289}, 
  institution={Office of Scientific and Technical Information  (OSTI)}, 
  author={BROWN}, 
  year={2001}, 
  month={Sep}
  }