C. Alvarado and R. Davis, Resolving ambiguities to create a natural computer-based sketching environment, IJCAI, pp.1365-1374, 2001.

H. Bunke, Hybrid pattern recognition methods, Syntactic and Structural Pattern Recognition. Theory and Applications, pp.307-347, 1990.

G. Costagliola and V. Deufemia, Visual language editors based on lr parsing techniques, Proceedings of 8th International Workshop on Parsing Technologies, 2003.

J. Jorge and E. Glinert, Online parsing of visual languages using adjacency grammars, Proceedings of Symposium on Visual Languages, pp.250-257, 1995.
DOI : 10.1109/VL.1995.520816

J. Landay and B. Myers, Sketching interfaces: toward more human interface design, Computer, vol.34, issue.3, pp.56-64, 2001.
DOI : 10.1109/2.910894

J. Lladós, E. Valveny, G. Sánchez, and E. Martí, Symbol Recognition: Current Advances and Perspectives, Graphics Recognition: Algorithms and Applications, pp.104-127, 2002.
DOI : 10.1007/3-540-45868-9_9

J. Mas, G. Sanchez, and J. Llados, An incremental parser to recognize diagram symbols and gestures represented by adjacency grammars Graphics Recognition: Ten Year Review and Perspectives, Lecture Notes in Computer Science, vol.3926, pp.252-263, 2006.

J. Mas-romeu, B. Lamiroy, G. Sanchez, and J. Llados, Automatic adjacency grammar generator from user drawn sketches, Proceedings of 18th International Conference on Pattern Recognition, 2006.

J. Rekers and A. Schurr, Defining and Parsing Visual Languages with Layered Graph Grammars, Journal of Visual Languages & Computing, vol.8, issue.1, pp.27-55, 1997.
DOI : 10.1006/jvlc.1996.0027

D. Zhang and G. Lu, Review of shape representation and description techniques, Pattern Recognition, vol.37, issue.1, pp.1-19, 2004.
DOI : 10.1016/j.patcog.2003.07.008