Combined Model of Smart Cities and Electronic Payments. - Ralf-Martin Soe; Olga Mikheeva (CeDEM, 2017)

FINEST Twins: platform for cross-border smart city solutions. - Ralf-Martin Soe (DG.O, 2017)

The role of demographics in cities. - Ralf-Martin Soe (DG.O, 2017)

Smart Twin Cities via Urban Operating System. - Ralf-Martin Soe (ICEGOV, 2017)

Agile local governments: Experimentation before implementation. - Ralf-Martin Soe; Wolfgang Drechsler (Gov. Inf. Q., 2018)

Smart city collaboration model: a case study of university-city collaboration. - Lill Sarv; Kristel Kibus; Ralf-Martin Soe (ICEGOV, 2020)

Facilitating cross-sectoral digital product development. - Ralf-Martin Soe (ICEGOV, 2020)

Smart Governance in Urban Mobility Process. - Ralf-Martin Soe (SmartCity360°, 2020)

Preface. - Teija Vainio; Elise Hodson; Michel Nader Sayún; Ralf-Martin Soe (IxD&A, 2021)

Extending the "Smart City" Concept to Small-to-Medium Sized Estonian Municipalities: Initiatives and Challenges Faced. - Karin Amukugo Fröhlich; Ralf-Martin Soe; Pardon Blessings Maoneke; Karishma Jain; Antti Pinomaa; Marko Nieminen (EMCIS, 2022)

Piloting Smart City Solutions in Very Small, Small and Medium-sized Municipalities. The Estonian case study. - Lill Sarv; Ralf-Martin Soe (ICEGOV, 2022)

Replication and UpScaling of Smart Cities in Academia and Practice: Concepts, Barriers and Enablers. - Ralf-Martin Soe (DG.O, 2023)

Devising an Urban Learning Centre for Municipalities in Eastern Partnership Countries. - Luiza Schuch de Azambuja; Ralf-Martin Soe (I3E, 2023)

Glass-box Automated Driving: Insights and Future Trends. - Mauro Bellone; Raivo Sell; Ralf-Martin Soe (ICAART (1), 2025)