Sinaga, F. .; Setyawati, S. M. .; Laksana, R. D. . ROOT CAUSE PROBLEM SOLVING (RCPS) ANALYSIS AS AN OPTIMIZATION OF GENERAL CATEGORY ELECTRICITY BILL ARREARS CONTROL STRATEGY AT PT PLN (PERSERO) UNIT LAYANAN PELANGGAN BANYUMAS . ijess 2020, 1, 28-36.