Gheorge Tzitzeica -- an incomplete bibliography. Pripoae, Gabriel Teodor; Gogu, Radu — 2005 Balkan Journal of Geometry and its Applications (BJGA)
Generalized invexity on differentiable manifolds. Pripoae, Cristina Liliana; Pripoae, Gabriel Teodor — 2005 Balkan Journal of Geometry and its Applications (BJGA)
Gheorghe Vrănceanu – successor of Gheorge Tzitzeitca at the Geometry chair of the University of Bucharest. Nicolescu, Liviu; Pripoae, Gabriel Teodor — 2005 Balkan Journal of Geometry and its Applications (BJGA)
Free fall motion in an invariant field of forces: the 2D-case. Pripoae, Cristina-Liliana; Pripoae, Gabriel-Teodor — 2009 Balkan Journal of Geometry and its Applications (BJGA)