@inproceedings{Barzdins-EtAl:2009:ADBIS, author = "G. Barzdins and S. Rikacovs and M. Zviedris", title = "Graphical query language as SPARQL frontend", year = 2009, booktitle = "Proceedings of the 13th East-European Conference on Advances in Databases and Information Systems (ADBIS)" }