Key Success Factors in Introducing National e-Identification Systems. - Valentyna Tsap; Ingrid Pappel; Dirk Draheim (FDSE, 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)

Key Factors in Coping with Large-Scale Security Vulnerabilities in the eID Field. - Silvia Lips; Ingrid Pappel; Valentyna Tsap; Dirk Draheim (EGOVIS, 2018)

Implementation of Information Security in the EU Information Systems - An Estonian Case Study. - Maris Järvsoo; Alexander Norta; Valentyna Tsap; Ingrid Pappel; Dirk Draheim (I3E, 2018)

Designing Effective Chatbot Solutions for the Public Sector: A Case Study from Ukraine. - Yulia Petriv; Regina Erlenheim; Valentyna Tsap; Ingrid Pappel; Dirk Draheim (EGOSE, 2019)

Factors Affecting e-ID Public Acceptance: A Literature Review. - Valentyna Tsap; Ingrid Pappel; Dirk Draheim (EGOVIS, 2019)

Aspects of Personal Data Protection from State and Citizen Perspectives - Case of Georgia. - Mariam Tsulukidze; Katrin Nyman-Metcalf; Valentyna Tsap; Ingrid Pappel; Dirk Draheim (I3E, 2019)

eID Public Acceptance in Estonia: towards Understanding the Citizen. - Valentyna Tsap; Silvia Lips; Dirk Draheim (DG.O, 2020)

Analyzing eID Public Acceptance and User Preferences for Current Authentication Options in Estonia. - Valentyna Tsap; Silvia Lips; Dirk Draheim (EGOVIS, 2020)

Vulnerability of State-Provided Electronic Identification: The Case of ROCA in Estonia. - Astrid Valtna-Dvorák; Silvia Lips; Valentyna Tsap; Rain Ottis; Jaan Priisalu; Dirk Draheim (EGOVIS, 2021)

The e-LocGov Model for Introducing e-Governance into Local Governments: An Estonian Case Study. - Ingrid Pappel; Valentyna Tsap; Dirk Draheim (IEEE Trans. Emerg. Top. Comput., 2021)

Management of National eID Infrastructure as a State-Critical Asset and Public-private Partnership: Learning from the Case of Estonia. - Silvia Lips; Valentyna Tsap; Nitesh Bharosa; Robert Krimmer; Tanel Tammet; Dirk Draheim (Inf. Syst. Frontiers, 2023)