@phdthesis{oai:tsukuba.repo.nii.ac.jp:00021053,
 author = {Ma, Qing and 馬, 青},
 month = {},
 note = {1989},
 school = {筑波大学, University of Tsukuba},
 title = {Modeling the cognitive processes with associative networks},
 year = {1990}
}