| article html file updated | 7 February 2020 09:43 CET | Update | https://www.mdpi.com/2308-3417/1/2/13 |
| article html file updated | 5 May 2019 13:48 CEST | Update | - |
| article html file updated | 27 March 2019 06:37 CET | Update | - |
| article html file updated | 3 June 2016 10:34 CEST | Original file | - |
| article xml uploaded. | 3 June 2016 10:33 CEST | Original file | https://www.mdpi.com/2308-3417/1/2/13/xml |
| article pdf uploaded. | 3 June 2016 10:33 CEST | Version of Record | https://www.mdpi.com/2308-3417/1/2/13/pdf |
