| article html file updated | 8 February 2020 21:42 CET | Update | https://www.mdpi.com/2313-5778/1/4/21 |
| article html file updated | 2 May 2019 13:52 CEST | Update | - |
| article html file updated | 18 April 2019 11:31 CEST | Update | - |
| article html file updated | 21 November 2017 06:59 CET | Update | - |
| article xml uploaded. | 21 November 2017 06:58 CET | Update | https://www.mdpi.com/2313-5778/1/4/21/xml |
| article pdf uploaded. | 21 November 2017 06:58 CET | Updated version of record | https://www.mdpi.com/2313-5778/1/4/21/pdf |
| article html file updated | 20 November 2017 11:42 CET | Original file | - |
| article xml uploaded. | 20 November 2017 11:41 CET | Original file | - |
| article pdf uploaded. | 20 November 2017 11:41 CET | Version of Record | https://www.mdpi.com/2313-5778/1/4/21/pdf-vor |
