| article html file updated | 9 February 2020 00:47 CET | Update | https://www.mdpi.com/1420-3049/23/1/4 |
| article html file updated | 29 September 2019 09:24 CEST | Update | N/A |
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| article html file updated | 21 December 2017 13:45 CET | Original file | N/A |
| article xml uploaded. | 21 December 2017 13:44 CET | Original file | https://www.mdpi.com/1420-3049/23/1/4/xml |
| article pdf uploaded. | 21 December 2017 13:44 CET | Version of Record | https://www.mdpi.com/1420-3049/23/1/4/pdf |
