@misc{indiciae4801ffc314ed, title = {Hierarchical attributes for categorization.}, author = {D J Bearison and I E Sigel}, year = {1968}, doi = {10.2466/pms.1968.27.1.147}, url = {https://pubmed.ncbi.nlm.nih.gov/5685684/}, note = {Source identifier: 5685684} }