| article html file updated | 6 February 2020 05:17 CET | Update | https://www.mdpi.com/2077-0383/2/4/214 |
| article html file updated | 7 May 2019 22:38 CEST | Update | - |
| article html file updated | 21 March 2019 06:57 CET | Update | - |
| article html file updated | 25 June 2015 12:08 CEST | Update | - |
| article xml file uploaded | 25 June 2015 12:08 CEST | Update | https://www.mdpi.com/2077-0383/2/4/214/xml |
| article html file updated | 16 December 2014 04:50 CET | Update | - |
| article xml file uploaded | 16 December 2014 04:50 CET | Update | - |
| article html file updated | 10 December 2014 09:53 CET | Original file | - |
| article xml file uploaded | 10 December 2014 09:53 CET | Original file | - |
| article pdf uploaded. | 31 October 2013 12:28 CET | Version of Record | https://www.mdpi.com/2077-0383/2/4/214/pdf |
