| article html file updated | 9 February 2020 11:02 CET | Update | https://www.mdpi.com/2313-0105/4/2/15 |
| article html file updated | 1 May 2019 09:11 CEST | Update | - |
| article html file updated | 17 April 2019 09:06 CEST | Update | - |
| article html file updated | 29 March 2019 09:18 CET | Update | - |
| article html file updated | 25 June 2018 11:47 CEST | Update | - |
| article html file updated | 23 March 2018 17:16 CET | Original file | - |
| article xml uploaded. | 23 March 2018 17:15 CET | Original file | https://www.mdpi.com/2313-0105/4/2/15/xml |
| article pdf uploaded. | 23 March 2018 17:15 CET | Version of Record | https://www.mdpi.com/2313-0105/4/2/15/pdf |
