| article html file updated | 8 February 2020 02:04 CET | Update | https://www.mdpi.com/1420-3049/22/4/506 |
| article html file updated | 23 September 2019 23:20 CEST | Update | - |
| article html file updated | 4 May 2019 05:24 CEST | Update | - |
| article html file updated | 11 September 2018 04:41 CEST | Update | - |
| article html file updated | 28 April 2017 10:05 CEST | Update | - |
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| article html file updated | 23 March 2017 11:20 CET | Original file | - |
| article xml uploaded. | 23 March 2017 11:19 CET | Original file | https://www.mdpi.com/1420-3049/22/4/506/xml |
| article pdf uploaded. | 23 March 2017 11:19 CET | Version of Record | https://www.mdpi.com/1420-3049/22/4/506/pdf |
