| article html file updated | 6 February 2020 01:12 CET | Update | https://www.mdpi.com/1422-0067/14/4/6690 |
| article html file updated | 8 May 2019 06:56 CEST | Update | - |
| article html file updated | 20 March 2019 20:15 CET | Update | - |
| article html file updated | 17 June 2015 07:52 CEST | Update | - |
| article html file updated | 21 May 2013 09:24 CEST | Update | - |
| article xml file uploaded | 21 May 2013 09:24 CEST | Update | https://www.mdpi.com/1422-0067/14/4/6690/xml |
| article html file updated | 6 May 2013 17:18 CEST | Original file | - |
| article xml file uploaded | 6 May 2013 17:17 CEST | Original file | - |
| article pdf uploaded. | 8 April 2013 17:37 CEST | Updated version of record | https://www.mdpi.com/1422-0067/14/4/6690/pdf |
| article pdf uploaded. | 28 March 2013 17:58 CET | Updated version of record | https://www.mdpi.com/1422-0067/14/4/6690/pdf-vor |
| article pdf uploaded. | 26 March 2013 11:24 CET | Version of Record | https://www.mdpi.com/1422-0067/14/4/6690/pdf-vor |
