@misc{indiciae1136e4081fc1,
  title = {Experimental Techniques Verified for Determining Yield and Flow Surfaces},
  author = {Lerch, Brad A. and Ellis, Rod and Lissenden, Cliff J.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/20050177211},
  note = {Source identifier: 20050177211}
}