@misc{1185346,
  author = {Bradford M Smith and Richard W Markley and Louis Costrell and George E Clark and Ira W Cotton and Jogrinda M Bakshi},
  title = {Interface standards for automated coal mining equipment:},
  year = {1977},
  month = {1977-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.77-1301},
  language = {en},
}