| article html file updated | 11 February 2020 15:37 CET | Update | https://www.mdpi.com/1996-1073/12/4/591 |
| article html file updated | 14 October 2019 21:35 CEST | Update | - |
| article html file updated | 26 April 2019 17:37 CEST | Update | - |
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| article html file updated | 28 February 2019 22:29 CET | Update | - |
| article html file updated | 13 February 2019 10:17 CET | Original file | - |
| article pdf uploaded. | 13 February 2019 10:15 CET | Version of Record | https://www.mdpi.com/1996-1073/12/4/591/pdf |
| article xml uploaded. | 13 February 2019 10:15 CET | Update | https://www.mdpi.com/1996-1073/12/4/591/xml |
| article xml file uploaded | 13 February 2019 10:15 CET | Original file | - |
