Comparative Study of Maximum Power Point Tracking Algorithms. doi:10.1002/pip.459.
Zhang, Q.; C. Hu; L. Chen; A. Amirahmadi; N. Kutkut; I. Batarseh. A Center Point Iteration MPPT Method With Application on the Frequency-Modulated LLC Microinverter. IEEE Transactions on Power Electronics. 2014, 29 (3): 1262–1274. doi:10.1109/tpel.2013.2262806.