The problem of classification.

@inproceedings{Ulett1956ThePO,
  title={The problem of classification.},
  author={G. Ulett and D. Goodrich},
  year={1956}
}
An investigation of cognitive factors in depression
Chapter XIV: References
  • 1975
Minimizing L max for large-scale, job-shop scheduling problems
A factor analysis of the signs and symptoms of mania.
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