| article html file updated | 7 February 2020 07:54 CET | Update | https://www.mdpi.com/2218-273X/6/2/24 |
| article html file updated | 5 May 2019 17:21 CEST | Update | - |
| article html file updated | 27 March 2019 03:12 CET | Update | - |
| article html file updated | 27 June 2016 08:06 CEST | Update | - |
| article html file updated | 28 April 2016 08:13 CEST | Original file | - |
| article xml uploaded. | 28 April 2016 08:11 CEST | Original file | https://www.mdpi.com/2218-273X/6/2/24/xml |
| article pdf uploaded. | 28 April 2016 08:11 CEST | Version of Record | https://www.mdpi.com/2218-273X/6/2/24/pdf |
