| article html file updated | 7 February 2020 20:27 CET | Update | https://www.mdpi.com/1420-3049/22/1/39 |
| article html file updated | 22 September 2019 16:02 CEST | Update | N/A |
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| article html file updated | 28 December 2016 11:15 CET | Original file | N/A |
| article xml uploaded. | 28 December 2016 11:14 CET | Original file | https://www.mdpi.com/1420-3049/22/1/39/xml |
| article pdf uploaded. | 28 December 2016 11:14 CET | Version of Record | https://www.mdpi.com/1420-3049/22/1/39/pdf |
