| article html file updated | 6 February 2020 02:35 CET | Update | https://www.mdpi.com/2218-273X/3/2/316 |
| article html file updated | 8 May 2019 04:08 CEST | Update | - |
| article html file updated | 20 March 2019 23:43 CET | Update | - |
| article html file updated | 21 March 2018 08:26 CET | Update | - |
| article html file updated | 17 June 2015 10:11 CEST | Update | - |
| article html file updated | 28 April 2014 10:33 CEST | Original file | - |
| article xml file uploaded | 28 April 2014 10:33 CEST | Original file | https://www.mdpi.com/2218-273X/3/2/316/xml |
| article pdf uploaded. | 10 June 2013 16:38 CEST | Version of Record | https://www.mdpi.com/2218-273X/3/2/316/pdf |
