| article html file updated | 6 February 2020 08:32 CET | Update | https://www.mdpi.com/1422-0067/15/4/6169 |
| article html file updated | 7 May 2019 16:01 CEST | Update | - |
| article html file updated | 21 March 2019 15:22 CET | Update | - |
| article html file updated | 20 August 2015 02:57 CEST | Update | - |
| article html file updated | 12 May 2014 11:39 CEST | Update | - |
| article xml file uploaded | 12 May 2014 11:39 CEST | Update | https://www.mdpi.com/1422-0067/15/4/6169/xml |
| article html file updated | 12 May 2014 10:55 CEST | Original file | - |
| article xml file uploaded | 12 May 2014 10:54 CEST | Original file | - |
| article pdf uploaded. | 11 April 2014 10:24 CEST | Version of Record | https://www.mdpi.com/1422-0067/15/4/6169/pdf |
