@misc{indiciaeb5d527e78897,
  title = {Layered intrusions of the Duluth Complex, Minnesota, USA},
  author = {J.D. Miller and E.M. Ripley},
  year = {2007},
  doi = {10.1016/s0167-2894(96)80010-8},
  url = {https://pubs.usgs.gov/publication/70018709},
  note = {Source identifier: 70018709}
}