| article html file updated | 7 February 2020 18:47 CET | Update | https://www.mdpi.com/1420-3049/21/12/1639 |
| article html file updated | 22 September 2019 07:38 CEST | Update | - |
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| article html file updated | 27 December 2016 12:00 CET | Update | - |
| article html file updated | 29 November 2016 14:23 CET | Original file | - |
| article xml uploaded. | 29 November 2016 14:22 CET | Original file | https://www.mdpi.com/1420-3049/21/12/1639/xml |
| article pdf uploaded. | 29 November 2016 14:22 CET | Version of Record | https://www.mdpi.com/1420-3049/21/12/1639/pdf |
