S. Hagl (Hagl, S.)

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  Atlas of Transesophageal Color Doppler Echocardiography and Intraoperative Imaging
  by Raffaele DeSimone, R. Lange, S. Hagl
  Hardcover, Springer, ISBN 0387579389 (0-387-57938-9)
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  Atlas of Transesophageal Color Doppler Echocardiography and Intraoperative Imaging: Raffaele De Simone ; Contributions by Rudiger Lange and Siegfried Hagl
  by Raffaele De Simone, Rudiger Lange, S. Hagl
  Hardcover, Springer-Verlag, ISBN 3540579389 (3-540-57938-9)