| article html file updated | 7 February 2020 18:29 CET | Update | https://www.mdpi.com/2075-4434/4/4/68 |
| article html file updated | 4 May 2019 21:36 CEST | Update | N/A |
| article html file updated | 28 December 2016 08:32 CET | Update | N/A |
| article html file updated | 24 November 2016 12:02 CET | Update | N/A |
| article xml uploaded. | 24 November 2016 12:00 CET | Update | https://www.mdpi.com/2075-4434/4/4/68/xml |
| article xml uploaded. | 24 November 2016 12:00 CET | Update | N/A |
| article pdf uploaded. | 24 November 2016 12:00 CET | Updated version of record | https://www.mdpi.com/2075-4434/4/4/68/pdf |
| article html file updated | 23 November 2016 11:21 CET | Original file | N/A |
| article xml uploaded. | 23 November 2016 11:20 CET | Original file | N/A |
| article pdf uploaded. | 23 November 2016 11:20 CET | Version of Record | https://www.mdpi.com/2075-4434/4/4/68/pdf-vor |
