| article html file updated | 7 February 2020 11:03 CET | Update | https://www.mdpi.com/2313-0105/2/3/23 |
| article html file updated | 5 May 2019 11:19 CEST | Update | N/A |
| article html file updated | 27 March 2019 09:04 CET | Update | N/A |
| article html file updated | 30 June 2016 14:48 CEST | Original file | N/A |
| article xml uploaded. | 30 June 2016 14:46 CEST | Original file | https://www.mdpi.com/2313-0105/2/3/23/xml |
| article pdf uploaded. | 30 June 2016 14:46 CEST | Version of Record | https://www.mdpi.com/2313-0105/2/3/23/pdf |
