| article html file updated | 7 February 2020 15:05 CET | Update | https://www.mdpi.com/1660-4601/13/9/921 |
| article html file updated | 5 May 2019 03:55 CEST | Update | - |
| article html file updated | 26 September 2016 12:13 CEST | Update | - |
| article html file updated | 22 September 2016 08:12 CEST | Update | - |
| article xml uploaded. | 22 September 2016 08:10 CEST | Update | https://www.mdpi.com/1660-4601/13/9/921/xml |
| article xml uploaded. | 22 September 2016 08:10 CEST | Update | - |
| article pdf uploaded. | 22 September 2016 08:10 CEST | Updated version of record | https://www.mdpi.com/1660-4601/13/9/921/pdf |
| article html file updated | 16 September 2016 08:14 CEST | Original file | - |
| article xml uploaded. | 16 September 2016 08:13 CEST | Update | - |
| article xml uploaded. | 16 September 2016 08:13 CEST | Original file | - |
| article pdf uploaded. | 16 September 2016 08:13 CEST | Version of Record | https://www.mdpi.com/1660-4601/13/9/921/pdf-vor |
