Awal Udin, Ahmad Robiul, and Azamataufiq Budiprasojo. “EFEK TURBULATOR LOUVERED STRIP TWISTED TERHADAP KINERJA DOUBLE TUBE HEAT EXCHANGER”. Jurnal Ilmiah Inovasi, vol. 15, no. 1, July 2016, doi:10.25047/jii.v15i1.65.