On subprojective transformations. Hirică, Iulia Elena — 2006 Balkan Journal of Geometry and its Applications (BJGA)

Invariant operators on real and complex manifolds. Hirică, Iulia Elena — 1999 Balkan Journal of Geometry and its Applications (BJGA)

On some pseudo-symmetric Riemann spaces. Hirică, Iulia Elena — 2009 Balkan Journal of Geometry and its Applications (BJGA)

Some properties of a closed concircular almost contact manifold. Hirică, Iulia Elena; Mihai, Adela — 2004 Balkan Journal of Geometry and its Applications (BJGA)

Notes on semi-symmetric connections on spaces endowed with Weyl $f$-structures. Hirică, Elena Iulia — 1997 General Mathematics