GHASEMI, M., K. ARZANI, A. YADOLLAHI, S. GHASEMI, and S. SARIKHANI KHORRAMI. “Estimate of Leaf Chlorophyll and Nitrogen Content in Asian Pear (Pyrus Serotina Rehd.) by CCM-200”. Notulae Scientia Biologicae, vol. 3, no. 1, Mar. 2011, pp. 91-94, doi:10.15835/nsb315623.