@article{oai:u-ryukyu.repo.nii.ac.jp:02002002,
 author = {Nakao, Zensho and 仲尾, 善勝},
 issue = {29},
 journal = {琉球大学工学部紀要},
 note = {The elements of Galois field GF(4) are represented by four numerals {0,1,2,3}; it is shown that all quaternary logic functions can be expressed in a sort of standard form as polynomial functions over GF(4); the two field operators of GF(4) are proposed as basic logic gates and are used as basic building blocks in the representation of the logic functions., 紀要論文},
 pages = {47--59},
 title = {Logic Functions over Galois Field GF(4)}
}