3[4]Buzydlowski JW, Whie HD. Term Co-occurrence Analysis as an Interface for Digital Libraries[ A]. JCDL - The First ACM + IEEE Joint Conference on Digital Libraries[C]. 2001.
4[5]Schuetze, Hinrich. Document information retrieval using global word co - occurrence patterns[ EB/OL]. http://www. delphion. com/details?pn10 = US05675819, 1997.
