@ARTICLE\{IMM2007-04941,
    author       = "P. Bao and F. Anton and J. Rokne",
    title        = "Existence of a unique zero of nonlinear systems",
    year         = "2007",
    month        = "mar",
    keywords     = "Newton's method, non-linear equations, existence of zeros",
    pages        = "1-6",
    journal      = "Journal of Numerical Mathematics",
    volume       = "15",
    editor       = "",
    number       = "1",
    publisher    = "Walter de Gruyter GmbH \& Co. {KG}",
    url          = "http://www.degruyter.de/rs/278_8728_ENU_h.htm",
    abstract     = "Existence statements for zeros of nonlinear equations are established via
the interval Newton method  generalizing previous theorems requiring regularity 
of the inclusion for the Jacobian.",
    isbn_issn    = "1570-2820"
}