| article html file updated | 7 February 2020 20:30 CET | Update | https://www.mdpi.com/1420-3049/22/1/50 |
| article html file updated | 22 September 2019 16:20 CEST | Update | N/A |
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| article html file updated | 29 December 2016 11:26 CET | Original file | N/A |
| article xml uploaded. | 29 December 2016 11:25 CET | Original file | https://www.mdpi.com/1420-3049/22/1/50/xml |
| article pdf uploaded. | 29 December 2016 11:25 CET | Version of Record | https://www.mdpi.com/1420-3049/22/1/50/pdf |
