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\section*{Papers}

\subsection*{International Journals}

\item[1] ``Corrections to the gaussian overlap approximation. A new boson expansion'', J. DA PROVIDÊNCIA, J. N. URBANO and L. S. FERREIRA, Nucl. Phys. A {\bf 170}, 129 (1971).

\item[2] ``Theorem for energy-weighted averages of spectroscopic factors'', J. DA PROVIDÊNCIA and  C. M. SHAKIN, Phys. Rev. Lett. {\bf 27}, 1069 (1971).

\item[3] ``Cluster expansion for correlated wave functions of finite systems'', J. DA PROVIDÊNCIA and C. M. SHAKIN, Phys. Rev. {\bf C4}, 1560 (1971).

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