| article html file updated | 6 February 2020 08:51 CET | Update | https://www.mdpi.com/2072-6643/6/4/1752 |
| article html file updated | 7 May 2019 15:22 CEST | Update | - |
| article html file updated | 21 March 2019 16:08 CET | Update | - |
| article html file updated | 20 August 2015 04:33 CEST | Update | - |
| article html file updated | 12 May 2014 15:31 CEST | Original file | - |
| article xml file uploaded | 12 May 2014 15:31 CEST | Original file | https://www.mdpi.com/2072-6643/6/4/1752/xml |
| article pdf uploaded. | 25 April 2014 08:32 CEST | Updated version of record | https://www.mdpi.com/2072-6643/6/4/1752/pdf |
| article pdf uploaded. | 24 April 2014 12:04 CEST | Version of Record | https://www.mdpi.com/2072-6643/6/4/1752/pdf-vor |
