| article html file updated | 7 February 2020 09:22 CET | Update | https://www.mdpi.com/1420-3049/21/6/693 |
| article html file updated | 21 September 2019 17:58 CEST | Update | N/A |
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| article html file updated | 27 May 2016 14:22 CEST | Original file | N/A |
| article xml uploaded. | 27 May 2016 14:21 CEST | Original file | https://www.mdpi.com/1420-3049/21/6/693/xml |
| article pdf uploaded. | 27 May 2016 14:21 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/6/693/pdf |
