@misc{
    drgen,
    author = {J{\"a}rvisalo, Matti},
    title = "{drgen} --- regular $d$-{XORSAT} generator",
    url = "http://www.tcs.hut.fi/~mjj/benchmarks/aaai06/",
    month = "February",
    note = "Computer program",
    flags = "ACPT public SOFTWARE",
    year = "2006"
}