| article html file updated | 9 February 2020 00:44 CET | Update | https://www.mdpi.com/1420-3049/23/1/9 |
| article html file updated | 29 September 2019 09:01 CEST | Update | - |
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| article html file updated | 21 December 2017 12:47 CET | Original file | - |
| article xml uploaded. | 21 December 2017 12:46 CET | Original file | https://www.mdpi.com/1420-3049/23/1/9/xml |
| article pdf uploaded. | 21 December 2017 12:46 CET | Version of Record | https://www.mdpi.com/1420-3049/23/1/9/pdf |
