Programs Complexity: Comparative Analysis, Hierarchy, Classification. - Ion Ivan; Romulus Arhire; Marian Macesanu (ACM SIGPLAN Notices, 1987)

Data Metrics. - Ion Ivan; Otilia Parlog; Petrisor Oprea; Gheroghe Nosca; Anca-Andreea Ivan (IQ, 1998)

Data Certification. - Ion Ivan; Paul Pocatilu; Teodor Mihai; Costel Stanca (IQ, 2000)

Quality Characteristics of Collaborative Systems. - Ion Ivan; Cristian Ciurea (ACHI, 2009)

Collaborative Educational System Analysis and Assessment. - Ion Ivan; Cristian Ciurea; Daniel Milodin (ACHI, 2010)

Security of virtual entities. - Adina Uta; Ion Ivan; Marius Popa; Cristian Ciurea; Mihai Doinea (CompSysTech, 2014)

Metrics of Collaborative Business Systems in the Knowledge- based Economy. - Ion Ivan; Cristian Ciurea; Alin Zamfiroiu (ITQM, 2014)

Assigning Weights for Quality Software Metrics Aggregation. - Ion Ivan; Alin Zamfiroiu; Mihai Doinea; Mihai L. Despa (ITQM, 2015)

Motives and characteristics of Facebook use by students from a Romanian university. - Alexandru Balog; Costin Pribeanu; Ion Ivan (RoCHI, 2015)

Using profiling to assemble an agile collaborative software development team made up of freelancers. - Ion Ivan; Eduard Budacu; Mihai Liviu Despa (ITQM, 2019)