| article html file updated | 8 February 2020 21:27 CET | Update | https://www.mdpi.com/2227-9067/4/11/99 |
| article html file updated | 28 September 2019 13:13 CEST | Update | N/A |
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| article html file updated | 18 April 2019 12:05 CEST | Update | N/A |
| article html file updated | 30 November 2017 10:30 CET | Update | N/A |
| article html file updated | 18 November 2017 08:15 CET | Original file | N/A |
| article xml uploaded. | 18 November 2017 08:14 CET | Original file | https://www.mdpi.com/2227-9067/4/11/99/xml |
| article pdf uploaded. | 18 November 2017 08:14 CET | Updated version of record | https://www.mdpi.com/2227-9067/4/11/99/pdf |
| article pdf uploaded. | 17 November 2017 10:24 CET | Version of Record | https://www.mdpi.com/2227-9067/4/11/99/pdf-vor |
