| article html file updated | 9 February 2020 15:55 CET | Update | https://www.mdpi.com/2313-0105/4/2/21 |
| article html file updated | 3 October 2019 03:24 CEST | Update | N/A |
| article html file updated | 30 April 2019 23:23 CEST | Update | N/A |
| article html file updated | 16 April 2019 23:59 CEST | Update | N/A |
| article html file updated | 29 March 2019 20:41 CET | Update | N/A |
| article html file updated | 25 June 2018 11:50 CEST | Update | N/A |
| article html file updated | 1 May 2018 14:57 CEST | Original file | N/A |
| article pdf uploaded. | 1 May 2018 09:29 CEST | Version of Record | https://www.mdpi.com/2313-0105/4/2/21/pdf |
| article xml uploaded. | 1 May 2018 09:29 CEST | Update | https://www.mdpi.com/2313-0105/4/2/21/xml |
| article xml file uploaded | 1 May 2018 09:29 CEST | Original file | N/A |
