@misc{indiciae581fbfb9e20a,
  title = {Kinematic arguments against single relativistic shell models for GRBs},
  author = {Fenimore, Edward E. and Ramirez, E. and Sumner, M. C.},
  year = {1997},
  url = {https://ntrs.nasa.gov/citations/19990047349},
  note = {Source identifier: 19990047349}
}