| article html file updated | 9 February 2020 01:52 CET | Update | https://www.mdpi.com/1996-1073/11/1/86 |
| article html file updated | 29 September 2019 15:31 CEST | Update | N/A |
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| article html file updated | 1 February 2018 11:12 CET | Update | N/A |
| article pdf uploaded. | 23 January 2018 06:29 CET | Updated version of record | https://www.mdpi.com/1996-1073/11/1/86/pdf |
| article html file updated | 3 January 2018 09:46 CET | Original file | N/A |
| article xml uploaded. | 3 January 2018 09:45 CET | Original file | https://www.mdpi.com/1996-1073/11/1/86/xml |
| article pdf uploaded. | 3 January 2018 09:45 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/86/pdf-vor |