[6] WU C M L, YU D Q, LAW C M T, et al. Properties of leadfree solder alloys with rare earth element additions[J]. Materials Science and Engineering: R: Reports, 2004, 44(1): 144.
[11] MOZZI R L, WARREN B E. The structure of vitreous boron oxide[J]. Journal of Applied Crystallography, 1970, 3(4): 251257.
[12] BALE S, RAHMAN S, AWASTHI A M, et al. Role of Bi2O3 content on physical, optical and vibrational studies in Bi2O3ZnOB2O3 glasses[J]. Journal of Alloys and Compounds, 2008, 460(1/2): 699703.