Baoji College of Arts and Science. Journal. Natural Science Edition. Baoji Wenli Xueyuan Xuebao. Ziran Kexue Ban (J. Baoji College Arts Sci. Nat. Sci.) (19960101), 16, no.~2, 70-75. ISSN: 1007-1261 (print).
Baoji College of Arts and Science. Journal. Natural Science Edition. Baoji Wenli Xueyuan Xuebao. Ziran Kexue Ban (J. Baoji College Arts Sci. Nat. Sci.) (20000101), 20, no.~2, 103-104. ISSN: 1007-1261 (print).