?url_ver=Z39.88-2004&rft_id=10.1109%2FITSIM.2008.4631664&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Mukhlason&rft.au=Mukhlason%2C+A.&rft.aufirst=A.&rft.title=Semi+automatic+ontological+knowledge+base+construction+from+learning+materials+in+eLearning+Management+System&rft.date=2008&rft.isbn=9781424423286&rft.genre=proceeding