Author: Maxwell Guimarães (UFAL, Brazil), Ig Ibert Bittencourt (UFAL and UFCG, Brazil), Evandro Costa (UFAL, Brazil)
Year: 2008
Reference: Second Brazilian Workshop on Semantic Web and Education, 12-14 November, Fortaleza, Brazil
URL: http://www.grow.ic.ufal.br/events/accepted-full-and-short-papers-second-brazilian-wswed/framework-para-autoria-de-ontologias-baseado-em-sistemas-assistentes

Author: Darina Dicheva, Christo Dichev, Dandan Wang
Year: 2005
Reference: Workshop on Applications of Semantic Web Technologies for e-Learning (SW-EL@ICALTâ??05), July 5-8, 2005, Kaohsiung, Taiwan
URL: http://www.win.tue.nl/SW-EL/2005/swel05-icalt05/final/W3-4.pdf

Author: Darina Dicheva, Christo Dichev
Year: 2006
Reference: British Journal of Educational Technology (BJET), 37(3), 391-404
URL: http://www.blackwell-synergy.com/doi/abs/10.1111/j.1467-8535.2006.00612.x

Author: Intelligent Information Systems Group
Year: 
Reference: A free Topic Map Editor and Browser-
URL: http://compsci.wssu.edu/iis/nsdl

Author: Stanford Medical Informatics, Stanford University School of Medicine, USA
Year: 2000
Reference:  A free, open source ontology editor and knowledge-based framework.
URL: http://protege.stanford.edu/

Author: Dino Karabeg, Rolf Guescini, Tommy W. Nordeng
Year: 2005
Reference: Workshop on Applications of Semantic Web Technologies for e-Learning (SW-EL@ICALT'05), July 5-8, 2005, Kaohsiung, Taiwan
URL: http://www.win.tue.nl/SW-EL/2005/swel05-icalt05/final/W3-2.pdf

Author: 
Year: 
Reference: 
URL: http://www.ontoknowledge.org/tools/ontoedit.shtml

Author:  Mizoguchi's Lab, Osaka University, Japan
Year: 
Reference: 
URL: http://www.hozo.jp/