| article html file updated | 7 February 2020 12:39 CET | Update | https://www.mdpi.com/2077-0383/5/8/68 |
| article html file updated | 21 September 2019 22:09 CEST | Update | - |
| article html file updated | 5 May 2019 08:22 CEST | Update | - |
| article html file updated | 27 March 2019 12:03 CET | Update | - |
| article html file updated | 26 August 2016 07:51 CEST | Update | - |
| article html file updated | 1 August 2016 11:13 CEST | Original file | - |
| article xml uploaded. | 1 August 2016 11:12 CEST | Original file | https://www.mdpi.com/2077-0383/5/8/68/xml |
| article pdf uploaded. | 1 August 2016 11:12 CEST | Version of Record | https://www.mdpi.com/2077-0383/5/8/68/pdf |
