| article html file updated | 9 February 2020 20:48 CET | Update | https://www.mdpi.com/2226-471X/3/2/20 |
| article html file updated | 4 October 2019 10:10 CEST | Update | - |
| article html file updated | 30 April 2019 12:33 CEST | Update | - |
| article html file updated | 16 April 2019 12:57 CEST | Update | - |
| article html file updated | 16 April 2019 07:37 CEST | Update | - |
| article html file updated | 30 March 2019 09:04 CET | Update | - |
| article html file updated | 8 June 2018 12:39 CEST | Original file | - |
| article pdf uploaded. | 8 June 2018 12:38 CEST | Version of Record | https://www.mdpi.com/2226-471X/3/2/20/pdf |
| article xml uploaded. | 8 June 2018 12:38 CEST | Update | https://www.mdpi.com/2226-471X/3/2/20/xml |
| article xml file uploaded | 8 June 2018 12:38 CEST | Original file | - |
