| article html file updated | 11 February 2020 05:11 CET | Update | https://www.mdpi.com/1996-1073/12/1/52 |
| article html file updated | 12 October 2019 11:18 CEST | Update | - |
| article html file updated | 27 April 2019 14:50 CEST | Update | - |
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| article html file updated | 16 January 2019 05:11 CET | Update | - |
| article html file updated | 25 December 2018 06:16 CET | Original file | - |
| article pdf uploaded. | 25 December 2018 05:50 CET | Version of Record | https://www.mdpi.com/1996-1073/12/1/52/pdf |
| article xml uploaded. | 25 December 2018 05:50 CET | Update | https://www.mdpi.com/1996-1073/12/1/52/xml |
| article xml file uploaded | 25 December 2018 05:50 CET | Original file | - |
