| article html file updated | 6 February 2020 07:58 CET | Update | https://www.mdpi.com/2218-273X/4/1/354 |
| article html file updated | 7 May 2019 17:11 CEST | Update | - |
| article html file updated | 21 March 2019 14:03 CET | Update | - |
| article html file updated | 14 March 2018 13:08 CET | Update | - |
| article html file updated | 20 August 2015 00:10 CEST | Update | - |
| article html file updated | 28 April 2014 10:38 CEST | Original file | - |
| article xml file uploaded | 28 April 2014 10:38 CEST | Original file | https://www.mdpi.com/2218-273X/4/1/354/xml |
| article pdf uploaded. | 18 March 2014 11:26 CET | Version of Record | https://www.mdpi.com/2218-273X/4/1/354/pdf |
