Hongjian Li et al.: Positive Rational Numbers of the Form φ ( m 2 ) / φ ( n 2 ). (2021)journals/tamm/LiYB2110.1080/00029890.2021.1850142Positive Rational Numbers of the Form φ ( m 2 ) / φ ( n 2 ).3Hongjian Li1Pingzhi Yuan2Hairong Bai3174-176Am. Math. Mon.Am. Math. Mon.12822021provenance information for RDF data of dblp record 'journals/tamm/LiYB21'2021-03-11T18:23:41+0100