Methodology for measuring the digital capability of local governments. - Ingmar Pappel; Ingrid Pappel (ICEGOV, 2011)

Conception and activity directions for training and science centre supporting development of Estonian e-state technologies. - Ingrid Pappel; Ingmar Pappel; Monika Saarmann (ICEGOV, 2011)

The Design of the Estonian Governmental Document Exchange Classification Framework. - Dirk Draheim; Kaarel Koosapoeg; Mihkel Lauk; Ingrid Pappel; Ingmar Pappel; Jaak Tepandi (EGOVIS, 2016)

An Overview of Digital Signing and the Influencing Factors in Estonian Local Governments. - Sigrid Felt; Ingmar Pappel; Ingrid Pappel (FDSE, 2016)

Driving Forces and Design of the TTÜ e-Governance Technologies and Services Master's Program. - Ingrid Pappel; Karin Oolu; Ingmar Pappel; Dirk Draheim (EGOVIS, 2017)

Systematic Digital Signing in Estonian e-Government Processes - Influencing Factors, Technologies, Change Management. - Ingrid Pappel; Ingmar Pappel; Jaak Tepandi; Dirk Draheim (Trans. Large Scale Data Knowl. Centered Syst., 2017)

Exploring e-Services Development in Local Government Authorities by Means of Electronic Document Management Systems. - Ingrid Pappel; Valentyna Tsap; Ingmar Pappel; Dirk Draheim (EGOSE, 2018)

Maturity Model for Automatization of Service Provision and Decision-Making Processes in Municipalities. - Ingmar Pappel; Teona Gelashvili; Ingrid Pappel (ICICT (3), 2021)