Nisizawa K, Yamaguchi T, Handa N, Maeda M, Yamazaki H (November 1963). "Chemical nature of a uronic acid-containing polysaccharide in the peritrophic membrane of the silkworm". Journal of Biochemistry. 54 (5). Japan: Oxford University Press for Japanese Biochemical Society: 419–426. doi:10.1093/oxfordjournals.jbchem.a127808. ISSN0021-924X. PMID14089735.
Nisizawa K, Yamaguchi T, Handa N, Maeda M, Yamazaki H (November 1963). "Chemical nature of a uronic acid-containing polysaccharide in the peritrophic membrane of the silkworm". Journal of Biochemistry. 54 (5). Japan: Oxford University Press for Japanese Biochemical Society: 419–426. doi:10.1093/oxfordjournals.jbchem.a127808. ISSN0021-924X. PMID14089735.
Nisizawa K, Yamaguchi T, Handa N, Maeda M, Yamazaki H (November 1963). "Chemical nature of a uronic acid-containing polysaccharide in the peritrophic membrane of the silkworm". Journal of Biochemistry. 54 (5). Japan: Oxford University Press for Japanese Biochemical Society: 419–426. doi:10.1093/oxfordjournals.jbchem.a127808. ISSN0021-924X. PMID14089735.