| article html file updated | 7 February 2020 17:30 CET | Update | https://www.mdpi.com/2309-608X/2/4/27 |
| article html file updated | 22 September 2019 04:42 CEST | Update | - |
| article html file updated | 4 May 2019 23:30 CEST | Update | - |
| article html file updated | 11 December 2018 09:33 CET | Update | - |
| article html file updated | 11 December 2018 09:24 CET | Update | - |
| article html file updated | 11 December 2018 09:21 CET | Update | - |
| article html file updated | 4 November 2016 08:38 CET | Original file | - |
| article xml uploaded. | 4 November 2016 08:37 CET | Original file | https://www.mdpi.com/2309-608X/2/4/27/xml |
| article pdf uploaded. | 4 November 2016 08:37 CET | Version of Record | https://www.mdpi.com/2309-608X/2/4/27/pdf |
