| article html file updated | 6 February 2020 01:14 CET | Update | https://www.mdpi.com/1422-0067/14/4/6903 |
| article html file updated | 8 May 2019 06:52 CEST | Update | N/A |
| article html file updated | 20 March 2019 20:19 CET | Update | N/A |
| article html file updated | 17 June 2015 07:57 CEST | Update | N/A |
| article html file updated | 21 May 2013 09:25 CEST | Update | N/A |
| article xml file uploaded | 21 May 2013 09:25 CEST | Update | https://www.mdpi.com/1422-0067/14/4/6903/xml |
| article html file updated | 6 May 2013 17:25 CEST | Original file | N/A |
| article xml file uploaded | 6 May 2013 17:24 CEST | Original file | N/A |
| article pdf uploaded. | 27 March 2013 10:34 CET | Version of Record | https://www.mdpi.com/1422-0067/14/4/6903/pdf |
