| article html file updated | 6 February 2020 01:25 CET | Update | https://www.mdpi.com/1422-0067/14/4/7660 |
| article html file updated | 8 May 2019 06:27 CEST | Update | - |
| article html file updated | 20 March 2019 20:47 CET | Update | - |
| article html file updated | 17 June 2015 08:15 CEST | Update | - |
| article html file updated | 21 May 2013 09:29 CEST | Update | - |
| article xml file uploaded | 21 May 2013 09:29 CEST | Update | https://www.mdpi.com/1422-0067/14/4/7660/xml |
| article html file updated | 6 May 2013 17:51 CEST | Original file | - |
| article xml file uploaded | 6 May 2013 17:50 CEST | Original file | - |
| article pdf uploaded. | 9 April 2013 12:14 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/4/7660/pdf |
