| article html file updated | 7 February 2020 03:41 CET | Update | https://www.mdpi.com/2077-0383/5/1/12 |
| article html file updated | 6 May 2019 02:06 CEST | Update | N/A |
| article html file updated | 26 March 2019 18:57 CET | Original file | N/A |
| article pdf uploaded. | 21 January 2016 12:38 CET | Version of Record | https://www.mdpi.com/2077-0383/5/1/12/pdf |
| article xml uploaded. | 21 January 2016 12:38 CET | Original file | https://www.mdpi.com/2077-0383/5/1/12/xml |
