Gupta, S. K.; Lal, D.; Lal, R. (1 January 2009). "Novosphingobium panipatense sp. nov. and Novosphingobium mathurense sp. nov., from oil-contaminated soil". International Journal of Systematic and Evolutionary Microbiology. 59 (1): 156–161. doi:10.1099/ijs.0.65743-0. PMID19126741.
Gupta, S. K.; Lal, D.; Lal, R. (1 January 2009). "Novosphingobium panipatense sp. nov. and Novosphingobium mathurense sp. nov., from oil-contaminated soil". International Journal of Systematic and Evolutionary Microbiology. 59 (1): 156–161. doi:10.1099/ijs.0.65743-0. PMID19126741.