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| 1997 | ||
|---|---|---|
| 1 | Gottfried Schapeler, Karl-Heinz Jerke, Gisela Grasshoff: The Impact of Service Competition on Navigation. ECMAST 1997: 409-422 | |
| 1 | Karl-Heinz Jerke | [1] |
| 2 | Gottfried Schapeler | [1] |
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