Reference:

Kai Puolamäki, Sami Hanhijärvi, and Gemma C. Garriga. An approximation ratio for biclustering. Information Processing Letters, 108(2):45–49, 2008.

Suggested BibTeX entry:

@article{Puolamaki08ipl,
    author = {Kai Puolam\"aki and Sami Hanhij\"arvi and Gemma C. Garriga},
    journal = {Information Processing Letters},
    number = {2},
    pages = {45--49},
    title = {An approximation ratio for biclustering},
    volume = {108},
    year = {2008},
}