| article html file updated | 6 February 2020 06:57 CET | Update | https://www.mdpi.com/1660-3397/12/2/601 |
| article html file updated | 7 May 2019 19:19 CEST | Update | N/A |
| article html file updated | 21 March 2019 11:36 CET | Update | N/A |
| article html file updated | 19 August 2015 18:47 CEST | Update | N/A |
| article html file updated | 18 March 2014 09:46 CET | Original file | N/A |
| article xml file uploaded | 18 March 2014 09:46 CET | Original file | https://www.mdpi.com/1660-3397/12/2/601/xml |
| article pdf uploaded. | 27 January 2014 12:38 CET | Version of Record | https://www.mdpi.com/1660-3397/12/2/601/pdf |
