\begin{thebibliography}{}
\itemsep0pt

\bibitem[Biondi and Symes, 2004]{biosymes}
Biondi, B. and W.~W. Symes,  2004, Angle-domain common-image gathers for
  migration velocity analysis by wavefield-continuation imaging: Geophysics,
  {\bf 69}, 1283--1298.

\bibitem[Claerbout, 1971]{claerbout71}
Claerbout, J.~F.,  1971, Toward a unified theory of reflector mapping:
  Geophysics, {\bf 36}, 467--481.

\bibitem[Huang et~al., 1999]{huang:1524}
Huang, L.-J., M.~C. Fehler, and R.-S. Wu,  1999, Extended local born fourier
  migration method: Geophysics, {\bf 64}, 1524--1534.

\bibitem[Liu and Wang, 2007]{liu:2797}
Liu, S. and H. Wang,  2007, Time-shift angle-domain common-image gathers for
  migration velocity analysis: SEG Technical Program Expanded Abstracts, {\bf
  26}, 2797--2801.

\bibitem[Rickett and Sava, 2002]{rickett}
Rickett, J.~E. and P.~C. Sava,  2002, Offset and angle-domain common
  image-point gathers for shot-profile migration: Geophysics, {\bf 67},
  883--889.

\bibitem[Sava, 2004]{savaphd}
Sava, P.,  2004, Migration and velocity analysis by wavefield extrapolation:
  PhD thesis, Stanford University.

\bibitem[Sava and Biondi, 2003]{sava05}
Sava, P. and B. Biondi,  2003, Migration velocity analysis by recursive
  wavefield extrapolation: In: proceedings of the 2003 EAGE-SEG Summer Research
  Workshop, {T}21.

\bibitem[Sava and Biondi, 2004]{sava04}
--------, 2004, Wave-equation migration velocity analysis. {II}. {S}ubsalt
  imaging examples: Geophysical Prospecting, {\bf 52}, 607--623.

\bibitem[Sava and Fomel, 2005]{sava:2052}
Sava, P. and S. Fomel,  2005, Coordinate-independent angle-gathers for wave
  equation migration: SEG Technical Program Expanded Abstracts, {\bf 24},
  2052--2055.

\bibitem[Sava and Fomel, 2006]{sava:S209}
--------, 2006, Time-shift imaging condition in seismic migration: Geophysics,
  {\bf 71}, S209--S217.

\bibitem[Shen and Symes, 2008]{shen:VE49}
Shen, P. and W.~W. Symes,  2008, Automatic velocity analysis via shot profile
  migration: Geophysics, {\bf 73}, VE49--VE59.

\end{thebibliography}
