| article html file updated | 7 February 2020 06:45 CET | Update | https://www.mdpi.com/1420-3049/21/4/441 |
| article html file updated | 21 September 2019 14:24 CEST | Update | - |
| article html file updated | 5 May 2019 19:44 CEST | Update | - |
| article html file updated | 27 March 2019 00:54 CET | Update | - |
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| article html file updated | 28 April 2016 11:37 CEST | Update | - |
| article html file updated | 1 April 2016 13:39 CEST | Original file | - |
| article xml uploaded. | 1 April 2016 13:38 CEST | Update | https://www.mdpi.com/1420-3049/21/4/441/xml |
| article pdf uploaded. | 1 April 2016 13:38 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/441/pdf |
