| article html file updated | 8 February 2020 10:03 CET | Update | https://www.mdpi.com/1996-1073/10/7/921 |
| article html file updated | 25 September 2019 17:58 CEST | Update | N/A |
| article html file updated | 3 May 2019 14:07 CEST | Update | N/A |
| article html file updated | 31 July 2017 07:02 CEST | Update | N/A |
| article html file updated | 5 July 2017 12:14 CEST | Original file | N/A |
| article xml uploaded. | 5 July 2017 12:13 CEST | Original file | https://www.mdpi.com/1996-1073/10/7/921/xml |
| article pdf uploaded. | 5 July 2017 12:13 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/7/921/pdf |
| article pdf uploaded. | 4 July 2017 12:17 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/7/921/pdf-vor |
