5E. L. Keller, J. S. Martin, P,. M. Kingsbury. Semichemical pulping characteristics of Pacific Coast Red alder, Douglas-firs, Western red cedar, and Western hemlock, http.//ir.library.oregon- state.edu/xmlui/bitstream/handle/1957/2277/FPL_1912ocr.pdf? sequence=l. 2012.
二级参考文献2
1James P Casey Pulp and Paper Chemistry and Chemical Technology[m], 1951(1): 256
2Worster H E.Semichemical Pulping for Corrugating Grades[J] Sulfite Science ＆ Technology,1985(4):130
