E. M. Nainggolan, R. Aryandari, H. P. Fadholi, A. P. Nugroho, and E. A. Suyono, “EFFECTS OF CHROMIUM ON CHLOROPHYLL-a, CARBOHYDRATE AND PROTEIN CONTENTS IN <i>Tetraselmis</i&gt; sp. (Butcher 1959)”, KLS, vol. 2, no. 1, p. 556, Sep. 2015.