L’vov, V. et al. 1998. Immunobiological characterization of low toxic &amp; pyrogenic lipopolysaccharide from <em>Salmonella typhi</em>. Medical Journal of Indonesia. 7, Supp1 (Oct. 1998), 247–51. DOI:https://doi.org/10.13181/mji.v7iSupp1.1126.