A Variational Principle For The Theory Of Laminar Boundary Layers In Incompressible Fluids Božidar Vujanović; Đorđe Đukić — 1971 Publications de l'Institut Mathématique
Contribution to Theory of First Integrals for Nonholonomic Mechanical Systems Đorđe S. Đukić — 1984 Zbornik Radova