| article html file updated | 8 February 2020 02:28 CET | Update | https://www.mdpi.com/1660-3397/15/4/99 |
| article html file updated | 24 September 2019 01:28 CEST | Update | - |
| article html file updated | 4 May 2019 04:33 CEST | Update | - |
| article html file updated | 28 April 2017 08:21 CEST | Update | - |
| article html file updated | 29 March 2017 10:42 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 10:41 CEST | Original file | https://www.mdpi.com/1660-3397/15/4/99/xml |
| article pdf uploaded. | 29 March 2017 10:41 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/4/99/pdf |
