| article html file updated | 7 February 2020 20:22 CET | Update | https://www.mdpi.com/1420-3049/22/1/28 |
| article html file updated | 22 September 2019 15:35 CEST | Update | N/A |
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| article html file updated | 10 September 2018 10:03 CEST | Update | N/A |
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| article html file updated | 27 December 2016 10:40 CET | Original file | N/A |
| article xml uploaded. | 27 December 2016 10:38 CET | Original file | https://www.mdpi.com/1420-3049/22/1/28/xml |
| article pdf uploaded. | 27 December 2016 10:38 CET | Version of Record | https://www.mdpi.com/1420-3049/22/1/28/pdf |
