| article html file updated | 6 February 2020 09:34 CET | Update | https://www.mdpi.com/1422-0067/15/6/9481 |
| article html file updated | 7 May 2019 13:56 CEST | Update | N/A |
| article html file updated | 21 March 2019 17:48 CET | Update | N/A |
| article html file updated | 20 August 2015 08:30 CEST | Update | N/A |
| article html file updated | 16 July 2014 08:47 CEST | Update | N/A |
| article xml file uploaded | 16 July 2014 08:47 CEST | Update | https://www.mdpi.com/1422-0067/15/6/9481/xml |
| article html file updated | 11 July 2014 10:31 CEST | Update | N/A |
| article xml file uploaded | 11 July 2014 10:31 CEST | Update | N/A |
| article html file updated | 4 July 2014 03:21 CEST | Update | N/A |
| article xml file uploaded | 4 July 2014 03:21 CEST | Update | N/A |
| article html file updated | 27 June 2014 05:59 CEST | Original file | N/A |
| article xml file uploaded | 27 June 2014 05:59 CEST | Original file | N/A |
| article pdf uploaded. | 16 June 2014 11:08 CEST | Updated version of record | https://www.mdpi.com/1422-0067/15/6/9481/pdf |
| article pdf uploaded. | 28 May 2014 09:17 CEST | Version of Record | https://www.mdpi.com/1422-0067/15/6/9481/pdf-vor |