| article html file updated | 6 February 2020 08:37 CET | Update | https://www.mdpi.com/1422-0067/15/4/6412 |
| article html file updated | 7 May 2019 15:51 CEST | Update | - |
| article html file updated | 21 March 2019 15:33 CET | Update | - |
| article html file updated | 20 August 2015 03:21 CEST | Update | - |
| article html file updated | 12 May 2014 11:40 CEST | Update | - |
| article xml file uploaded | 12 May 2014 11:40 CEST | Update | https://www.mdpi.com/1422-0067/15/4/6412/xml |
| article html file updated | 12 May 2014 11:03 CEST | Original file | - |
| article xml file uploaded | 12 May 2014 11:02 CEST | Original file | - |
| article pdf uploaded. | 15 April 2014 13:45 CEST | Version of Record | https://www.mdpi.com/1422-0067/15/4/6412/pdf |
