@misc{indiciaef6e3e06d864f,
  title = {The total product concept.},
  author = {M D Shepherd},
  doi = {10.1016/s1086-5802(16)30177-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/9040164/},
  note = {Source identifier: 9040164}
}