Nonlinear Analysis – Theory and Methods,
Springer Monographs in Mathematics, Springer, Cham, 2019. (with N.S. Papageorgiou and V.D. Rădulescu)
MR 3890060, ZB 07024672. Remark: Top most cited in Mathematical Reviews among all books published in 2019.

Higher-Dimensional Generalized Manifolds: Surgery and Constructions,
EMS Series of Lectures in Mathematics, European Mathematical Society, Zurich, 2016. (with A. Cavicchioli and F. Hegenbarth)
MR 3558558, ZB 06584147.

Partial Differential Equations with Variable Exponents: Variational Methods and Qualitative Analysis,
Chapman and Hall/CRC, Taylor & Francis Group, Boca Raton, FL, 2015. (with V.D. Rădulescu)
MR 3379920, ZB 06435536. Remark: Third most cited in Mathematical Reviews among all books published in 2015.

Continuous Selections of Multivalued Mappings,
Kluwer Academic Publishers, Dordrecht 1998. (with P.V. Semenov)
MR 2000a:54002, ZB 915.54001.

Proceedings of the Graduate Workshop in Mathematics and Its Applications in Social Sciences,
Ljubljana, 23-27 September, 1991,
Edited by D. Repovš, University of Ljubljana, 1991.

Generalized Three-Manifolds With Zero-Dimensional Singular Set,
Dissertation, Florida State University, Tallahassee, Florida, 1983.