| article html file updated | 7 February 2020 20:39 CET | Update | https://www.mdpi.com/2313-576X/3/1/4 |
| article html file updated | 22 September 2019 17:11 CEST | Update | - |
| article html file updated | 4 May 2019 17:04 CEST | Update | - |
| article html file updated | 10 November 2017 07:49 CET | Update | - |
| article html file updated | 1 January 2017 08:22 CET | Original file | - |
| article xml uploaded. | 1 January 2017 08:21 CET | Original file | https://www.mdpi.com/2313-576X/3/1/4/xml |
| article pdf uploaded. | 1 January 2017 08:21 CET | Version of Record | https://www.mdpi.com/2313-576X/3/1/4/pdf |
