Automatic Sleep Stage Classification using Weighted ELM and PSO on Imbalanced Data from Single Lead ECG. - Oei Kurniawan Utomo; Nico Surantha; Sani Muhamad Isa; Benfano Soewito (ICCSCI, 2019)

High-Performance and Resource-Efficient IoT-based Sleep Monitoring System. - Nico Surantha; Oei Kurniawan Utomo; Sani Muhamad Isa (VTC Spring, 2020)

Intelligent Sleep Monitoring System Based on Microservices and Event-Driven Architecture. - Nico Surantha; Oei Kurniawan Utomo; Earlicha M. Lionel; Isabella D. Gozali; Sani M. Isa (IEEE Access, 2022)