| article html file updated | 9 February 2020 00:38 CET | Update | https://www.mdpi.com/1996-1073/10/12/2181 |
| article html file updated | 29 September 2019 08:25 CEST | Update | N/A |
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| article html file updated | 20 December 2017 08:31 CET | Original file | N/A |
| article xml uploaded. | 20 December 2017 08:30 CET | Original file | https://www.mdpi.com/1996-1073/10/12/2181/xml |
| article pdf uploaded. | 20 December 2017 08:30 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/2181/pdf |
