| article html file updated | 7 February 2020 19:13 CET | Update | https://www.mdpi.com/1420-3049/21/12/1660 |
| article html file updated | 22 September 2019 09:18 CEST | Update | - |
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| article xml uploaded. | 7 December 2016 16:51 CET | Update | https://www.mdpi.com/1420-3049/21/12/1660/xml |
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| article pdf uploaded. | 7 December 2016 16:51 CET | Version of Record | https://www.mdpi.com/1420-3049/21/12/1660/pdf |