@article{knuth76bigomicron,
        title = {Big Omicron and big Omega and big Theta},
        address = {New York, NY, USA},
        author = {Donald E. Knuth},
        journal = {SIGACT News},
        number = 2,
        pages = {18--24},
        publisher = {ACM},
        volume = 8,
        year = 1976,
        url = {http://doi.acm.org/10.1145/1008328.1008329},
        description = {Big Omicron and big Omega and big Theta},
	biburl = {http://www.bibsonomy.org/bibtex/25e8b827363e409d6b438df2620a954a3/sb3000},
	keywords = {theory complexity math algorithms}
}