On the Gaussian and mean curvature of certain surfaces. Malkowsky, Eberhard; Veličković, Vesna — 2001 Novi Sad Journal of Mathematics
Solutions of some visibility and contour problems in the visualisation of surfaces. Malkowsky, Eberhard; Veličković, Vesna — 2008 APPS. Applied Sciences
A Software for the Visualisationof Differential Geometry Eberhard Malkowsky Vesna Veličković — 2002 Visual Mathematics