| article html file updated | 9 February 2020 01:18 CET | Update | https://www.mdpi.com/2313-5778/2/1/2 |
| article html file updated | 2 May 2019 05:55 CEST | Update | - |
| article html file updated | 18 April 2019 03:54 CEST | Update | - |
| article html file updated | 28 March 2019 11:25 CET | Update | - |
| article html file updated | 27 December 2017 07:33 CET | Original file | - |
| article xml uploaded. | 27 December 2017 07:32 CET | Original file | https://www.mdpi.com/2313-5778/2/1/2/xml |
| article pdf uploaded. | 27 December 2017 07:32 CET | Version of Record | https://www.mdpi.com/2313-5778/2/1/2/pdf |
