The TIGR Gene Indices: reconstruction and representation of expressed gene sequences. - John Quackenbush; Feng Liang; Ingeborg Holt; Geo Pertea; Jonathan Upton (Nucleic Acids Res., 2000)

The TIGR Gene Indices: analysis of gene transcript sequences in highly sampled eukaryotic species. - John Quackenbush; Jennifer Cho; Daniel Lee; Feng Liang; Ingeborg Holt; Svetlana Karamycheva; Babak Parvizi; Geo Pertea; Razvan Sultana; Joseph White (Nucleic Acids Res., 2001)