JPFA, E. 2017. Introduction, Author Guidelines, and Table of Contents JPFA Vol 7 No 2 December 2017. Jurnal Penelitian Fisika dan Aplikasinya (JPFA). 7, 2 (Dec. 2017), ii-xi. DOI:https://doi.org/10.26740/jpfa.v7n2.pii-xi.