Some recent 
papers~\cite{Everett:2001tq,Feng:2001tr, Baltz:2001ts,Chattopadhyay:2001vx}
dealing with the corresponding
parameter space that this can happen are already (after one week from
the BNL report!) existed. Other solutions with exotic 
fermions~ \cite{Choudhury:2001ad}, lepton number 
violation~\cite{Choudhury:2001ad},
leptoquarks~\cite{Chakraverty:2001yg}
and technicolor~\cite{Lane:2001ta} have already been discussed.


%\cite{Everett:2001tq}
\bibitem{Everett:2001tq}
L.~Everett, G.~L.~Kane, S.~Rigolin and L.~Wang,
``Implications of muon $g-2$ for supersymmetry and for discovering  superpartners directly,''
hep-ph/0102145.
%%CITATION = HEP-PH 0102145;%%

%\cite{Feng:2001tr}
\bibitem{Feng:2001tr}
J.~L.~Feng and K.~T.~Matchev,
``Supersymmetry and the anomalous anomalous magnetic moment of the muon,''
hep-ph/0102146.
%%CITATION = HEP-PH 0102146;%%


%\cite{Baltz:2001ts}
\bibitem{Baltz:2001ts}
E.~A.~Baltz and P.~Gondolo,
``Implications of muon anomalous magnetic moment for supersymmetric dark  matter,''
hep-ph/0102147.
%%CITATION = HEP-PH 0102147;%%


%\cite{Chattopadhyay:2001vx}
\bibitem{Chattopadhyay:2001vx}
U.~Chattopadhyay and P.~Nath,
``Upper limits on sparticle masses from $g-2$ and the possibility for  discovery of SUSY at colliders and in dark matter searches,''
hep-ph/0102157.
%%CITATION = HEP-PH 0102157;%%

%\cite{Choudhury:2001ad}
\bibitem{Choudhury:2001ad}
D.~Choudhury, B.~Mukhopadhyaya and S.~Rakshit,
``Muon anomalous magnetic moment confronts exotic fermions and gauge bosons,''
hep-ph/0102199.
%%CITATION = HEP-PH 0102199;%%


%\cite{Huang:2001zx}
\bibitem{Huang:2001zx}
T.~Huang, Z.~H.~Lin, L.~Y.~Shan and X.~Zhang,
``Muon Anomalous Magnetic Moment and Lepton Flavor Violation,''
hep-ph/0102193.
%%CITATION = HEP-PH 0102193;%%

%\cite{Chakraverty:2001yg}
\bibitem{Chakraverty:2001yg}
D.~Chakraverty, D.~Choudhury and A.~Datta,
``A nonsupersymmetric resolution of the anomalous muon magnetic moment,''
hep-ph/0102180.
%%CITATION = HEP-PH 0102180;%%


%\cite{Lane:2001ta}
\bibitem{Lane:2001ta}
K.~Lane,
``New model-independent limit on muon substructure,''
hep-ph/0102131.
%%CITATION = HEP-PH 0102131;%%