\input zb-basic
\input zb-ioport
\iteman{io-port 04187731}
\itemau{Ekwue, A.O.}
\itemti{A voltage-based automatic contingency selection algorithm via a linearization method.}
\itemso{COMPEL 9, No.2, 99-107 (1990).}
\itemcc{}
\itemut{}
\itemli{doi:10.1108/eb010067}
\end