Recognition of simple singularities in positive characteristic. Marko Roczen — 1992 Mathematische Zeitschrift
The Picard group of the canonical resolution of a 3-dimensional simple singularity Marko Roczeń — 1988 Banach Center Publications
Indecomposable Cohen-Macaulay modules and irreducible maps Dorin Popescu; Marko Roczen — 1990 Compositio Mathematica
The second Brauer-Thrall conjecture for isolated singularities of excellent hypersurfaces. Dorin Popescu; Marko Roczen — 1991 Manuscripta mathematica
Examples of string-theoretic Euler numbers. Roczen, Marko — 2001 Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
On the string-theoretic Euler numbers of 3-dimensional A - D - E singularities. Dais, Dimitrios I.; Roczen, Marko — 2001 Advances in Geometry