| article html file updated | 6 February 2020 01:23 CET | Update | https://www.mdpi.com/1422-0067/14/4/7603 |
| article html file updated | 8 May 2019 06:32 CEST | Update | N/A |
| article html file updated | 20 March 2019 20:42 CET | Update | N/A |
| article html file updated | 17 June 2015 08:12 CEST | Update | N/A |
| article html file updated | 21 May 2013 09:29 CEST | Update | N/A |
| article xml file uploaded | 21 May 2013 09:29 CEST | Update | https://www.mdpi.com/1422-0067/14/4/7603/xml |
| article html file updated | 6 May 2013 17:49 CEST | Original file | N/A |
| article xml file uploaded | 6 May 2013 17:49 CEST | Original file | N/A |
| article pdf uploaded. | 8 April 2013 11:35 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/4/7603/pdf |
