., Terttiaavini, Fakhry Zamzam, Mustafa Ramadhan, Azrai’ie K. Rosni, Tedy Setiawan Saputra, Agustina Heryati, and Dhamayanti . 2018. “Clustering Analysis of Premier Research Fields”. International Journal of Engineering & Technology 7 (4.44): 43-46. https://doi.org/10.14419/ijet.v7i4.44.26860.