Sketch-based retrieval of ClipArt drawings. - Manuel J. Fonseca; Bruno Barroso; Pedro Ribeiro; Joaquim A. Jorge (AVI, 2004)

Retrieving ClipArt Images by Content. - Manuel J. Fonseca; Bruno Barroso; Pedro Ribeiro; Joaquim A. Jorge (CIVR, 2004)

Retrieving Vector Graphics Using Sketches. - Manuel J. Fonseca; Bruno Barroso; Pedro Ribeiro; Joaquim A. Jorge (Smart Graphics, 2004)