@misc{indiciae174f03703d9e,
  title = {Formation and evolution of the protoplanetary disk},
  author = {Ruzmaikina, Tamara V. and Makalkin, A. B.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910013651},
  note = {Source identifier: 19910013651}
}