Towards next generation power grid transformer for renewables: Technology review oleh Amrita Agarwala, Toki Tahsin, Md. Firoj Ali, Subrata K. Sarker, Sarafat Hussain Abhi, Sajal K. Das, Prangon Das, Md. Mehedi Hasan, Zinat Tasneem, Md. Manirul Islam, Md. Robiul Islam, Md. Faisal R. Badal, Md. Hafiz Ahamed