| article html file updated | 7 February 2020 22:23 CET | Update | https://www.mdpi.com/1420-3049/22/2/201 |
| article html file updated | 23 September 2019 02:24 CEST | Update | - |
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| article html file updated | 2 March 2017 03:45 CET | Update | - |
| article html file updated | 28 January 2017 03:50 CET | Original file | - |
| article xml uploaded. | 28 January 2017 03:49 CET | Original file | https://www.mdpi.com/1420-3049/22/2/201/xml |
| article pdf uploaded. | 28 January 2017 03:49 CET | Version of Record | https://www.mdpi.com/1420-3049/22/2/201/pdf |
