“Comparison of Different Plant Digestion Methods ( Di-Acid & Microwave) for Phosphorus Determination Content of Potato Leaf Using Spectrometry Grown in Erzurum: Pasinler and Oltu District Agricultural Soils ”. International Journal of Innovative Research in Computer Science & Technology, vol. 5, no. 6, Nov. 2017, pp. 407-11, https://acspublisher.com/journals/index.php/ijircst/article/view/13448.