| article html file updated | 6 February 2020 01:31 CET | Update | https://www.mdpi.com/2076-328X/3/2/206 |
| article html file updated | 8 May 2019 06:17 CEST | Update | - |
| article html file updated | 20 March 2019 21:00 CET | Update | - |
| article html file updated | 17 June 2015 08:25 CEST | Update | - |
| article html file updated | 26 August 2014 03:57 CEST | Original file | - |
| article xml file uploaded | 26 August 2014 03:57 CEST | Original file | https://www.mdpi.com/2076-328X/3/2/206/xml |
| article pdf uploaded. | 15 April 2013 16:43 CEST | Updated version of record | https://www.mdpi.com/2076-328X/3/2/206/pdf |
| article pdf uploaded. | 12 April 2013 16:30 CEST | Version of Record | https://www.mdpi.com/2076-328X/3/2/206/pdf-vor |
