| article html file updated | 6 February 2020 00:33 CET | Update | https://www.mdpi.com/1422-0067/14/2/3921 |
| article html file updated | 8 May 2019 08:26 CEST | Update | N/A |
| article html file updated | 20 March 2019 18:38 CET | Update | N/A |
| article html file updated | 17 June 2015 06:36 CEST | Update | N/A |
| article html file updated | 3 December 2013 08:17 CET | Update | N/A |
| article xml file uploaded | 3 December 2013 08:17 CET | Update | https://www.mdpi.com/1422-0067/14/2/3921/xml |
| article html file updated | 5 March 2013 19:38 CET | Original file | N/A |
| article xml file uploaded | 5 March 2013 19:38 CET | Original file | N/A |
| article pdf uploaded. | 19 February 2013 12:13 CET | Updated version of record | https://www.mdpi.com/1422-0067/14/2/3921/pdf |
| article supplementary file uploaded. | 15 February 2013 08:55 CET | - | https://www.mdpi.com/1422-0067/14/2/3921#supplementary |
| article pdf uploaded. | 15 February 2013 08:55 CET | Version of Record | https://www.mdpi.com/1422-0067/14/2/3921/pdf-vor |
