This is the publication you should cite if you want to make reference to Fresnel or JFresnel:
E. Pietriga, C. Bizer, D. Karger, R. Lee, Fresnel: A Browser-Independent Presentation Vocabulary for RDF, Lecture Notes in Computer Science (LNCS 4273), Proceedings of the 5th International Semantic Web Conference (ISWC 2006), pages 158-171, November 2006, Athens, GA, USA
This is the corresponding BibTeX entry:
@inproceedings{1192607812,
author = "Emmanuel Pietriga and Chris Bizer and David Karger and Ryan Lee",
title = "{Fresnel - A Browser-Independent Presentation Vocabulary for RDF}",
booktitle = "{Lecture Notes in Computer Science (LNCS 4273),
Proceedings of the 5th International Semantic Web Conference (ISWC 2006)}",
pages = "158-171",
year = "2006",
month = "November",
publisher = {Springer},
doi = {http://dx.doi.org/10.1007/11926078_12}
}