1: H.F.Mark, N.M.Bikales, C.G.Overberger, G.Menges, J.I.Kroschwitz. Encyclopedia of Polymer Science and Engineering 2.ed. (1988) John Wiley & Sons 2: Y.W.Han. Microbial Levan Adv. Appl. Microbiol. (1990) 35 171-94 3: P.J.Simms, W.J.Boyko, J.R.Edwards. The Structural Analysis of a Levan Produced by Streptococcus salivarius SS2 Carbohydr. Res. (1990) 208 193-98 |