| article html file updated | 6 February 2020 07:20 CET | Update | https://www.mdpi.com/1422-0067/15/2/2840 |
| article html file updated | 7 May 2019 18:31 CEST | Update | - |
| article html file updated | 21 March 2019 12:29 CET | Update | - |
| article html file updated | 19 August 2015 20:48 CEST | Update | - |
| article html file updated | 20 March 2014 10:06 CET | Original file | - |
| article xml file uploaded | 20 March 2014 10:05 CET | Original file | https://www.mdpi.com/1422-0067/15/2/2840/xml |
| article pdf uploaded. | 19 February 2014 11:31 CET | Version of Record | https://www.mdpi.com/1422-0067/15/2/2840/pdf |
