| article html file updated | 6 February 2020 14:45 CET | Update | https://www.mdpi.com/1660-3397/13/1/29 |
| article html file updated | 7 May 2019 03:23 CEST | Update | N/A |
| article html file updated | 25 March 2019 19:46 CET | Update | N/A |
| article html file updated | 21 August 2015 04:50 CEST | Update | N/A |
| article html file updated | 27 January 2015 07:12 CET | Original file | N/A |
| article xml file uploaded | 27 January 2015 07:12 CET | Original file | https://www.mdpi.com/1660-3397/13/1/29/xml |
| article pdf uploaded. | 24 December 2014 14:27 CET | Version of Record | https://www.mdpi.com/1660-3397/13/1/29/pdf |
