E. Zulaika and L. Sembiring, “MERCURY REDUCTASE ACTIVITY OF AN INDIGENOUS MERCURY RESISTANT BACTERIAL ISOLATE (<i>Bacillus sp.</i> S1) FROM KALIMAS-SURABAYA AS A POTENTIAL REDUCING AGENT FOR MERCURIAL ION (HG<sup>2+</sup&gt;)”, KLS, vol. 2, no. 1, pp. 446-450, Sep. 2015.