| article html file updated | 6 February 2020 07:15 CET | Update | https://www.mdpi.com/1422-0067/15/2/2608 |
| article html file updated | 7 May 2019 18:40 CEST | Update | N/A |
| article html file updated | 21 March 2019 12:19 CET | Update | N/A |
| article html file updated | 19 August 2015 20:20 CEST | Update | N/A |
| article html file updated | 20 March 2014 10:01 CET | Original file | N/A |
| article xml file uploaded | 20 March 2014 10:01 CET | Original file | https://www.mdpi.com/1422-0067/15/2/2608/xml |
| article pdf uploaded. | 14 February 2014 13:33 CET | Version of Record | https://www.mdpi.com/1422-0067/15/2/2608/pdf |
