Break links for reference citation are not working in hypdvips.sty

Break links for reference citation are not working in hypdvips.sty (with natbib.sty citations)

There are reference citation entries that span more than one line. Since I compile with LaTeX -> PS -> PDF, the links created by hyperref are not correctly displayed in the output file (pdf). To fix this issue, I added \usepackage{hypdvips} in my preamble. But I am not getting the links (at the same time I am getting links for toc that span more than one line)

\documentclass{book}
\usepackage{natbib}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage[draft=false,dvips,ps2pdf=true,colorlinks,pdfborderstyle={/S/U/W 0},bookmarksnumbered,bookmarksopen=false,unicode=true,pdfpagelabels=false]{hyperref}%
\usepackage[emptypagelabels=false]{hypdvips}
\makeatletter
\renewcommand*{\Hy@backout}[1]{}
\providecommand*{\backrefsetup}[1]{}
\makeatother

\begin{document}

The second breakthrough was the development of the semiconductor laser.
Demonstrations of laser action\enlargethispage{12pt}
in semiconductors were reported in \citet*{Hall1962}, in \citet*{Nathan1962}, in
\citet*{Holonyak1962}, and in \citet*{Quist1962}.
All of the papers were independently submitted within a span of less than three months in 1962. The practical breakthrough of the first
continuous-wave room-temperature semiconductor laser was reported by
\citet*{Alferov1970}.

\begin{thebibliography}{}
\bibitem[\protect\citeauthoryear{Hall, Fenner, Kingsley, Soltys, and Carlson}{Hall et~al.}{1962}]{Hall1962}
Hall, R.~N., G.~E. Fenner, J.~D. Kingsley, T.~J. Soltys, and R.~O. Carlson.
\newblock Coherent light emission from {Ga--As} junctions.
\newblock \textit{Physics Review Letters}, 9(9):366--8, 1962.

\bibitem[\protect\citeauthoryear{Nathan, Dumke, Burns, Dill, and Lasher}{Nathan et~al.}{1962}]{Nathan1962}
Nathan, M., W.~Dumke, G.~Burns, F.~Dill, and G.~Lasher.
\newblock Stimulated emission of radiation from {GaAs P--N} junctions.
\newblock \textit{Applied Physics Letters}, 1(3):62--4, 1962.

\bibitem[Holonyak and Bevacqua(1962)]{Holonyak1962}
Holonyak, N. and S.~F. Bevacqua.
\newblock Coherent (visible) light emission from {$\textrm{Ga}(\textrm{As}_{1 - x}\textrm{P}_x)$} junctions.
\newblock \textit{Applied Physics Letters}, 1(4):82--3, 1962.

\bibitem[\protect\citeauthoryear{Quist, Rediker, Keyes, Krag, Lax, and
  Zeigler}{Quist et~al.}{1962}]{Quist1962}
Quist, T.~M., R.~H. Rediker, R.~J. Keyes, W.~E. Krag, B.~Lax, A.~L. McWhorter, and H.~J. Zeigler.
\newblock Semiconductor maser of {GaAs}.
\newblock \textit{Applied Physics Letters}, 1(4):91--2, 1962.

\bibitem[\protect\citeauthoryear{Alferov, Andreev, Portnoi, and Turkan}{Alferov et~al.}{1970}]{Alferov1970}
Alferov, Zh.~I., V.~M. Andreev, E.~L. Portnoi, and M.~K. Turkan.
\newblock {AlAs--GaAs} heterojunction injection lasers with a low room-temperature threshold.
\newblock \textit{Soviet Physics Semiconductors}, \hbox{3:460--3}, 1970.

\end{thebibliography}
\end{document} 

Start with the minimal LaTeX example in the issue and reproduce the LaTeX → PS → PDF build using hyperref, hypdvips.sty, and natbib.sty. Inspect how hypdvips.sty handles citation links that span lines, comparing them with the working multi-line table-of-contents links. Done means the reference citation links are correctly displayed in the generated PDF.