| article html file updated | 12 November 2022 09:02 CET | Update | https://www.mdpi.com/1420-3049/3/6/159 |
| article html file updated | 5 February 2020 11:10 CET | Update | - |
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| article html file updated | 18 July 2017 03:28 CEST | Original file | - |
| article xml uploaded. | 18 July 2017 03:27 CEST | Update | https://www.mdpi.com/1420-3049/3/6/159/xml |
