High voltage pulse generator design with voltage control for pulse electric field (PEF) pasteurization. - Ika Noer Syamsiana; Ratna Ika Putri (ICEEI, 2011)

Digital Control of Parallel-Connected DC-DC Converters. - Taufik Taufik; Daniel Forbes; Dale Dolan; Ratna Ika Putri (ITNG, 2011)

Stochastic Petri Nets for very short-term wind speed modeling. - Ratna Ika Putri; Ardyono Priyadi; Mauridhi Hery Purnomo (CIVEMSA, 2015)