| article html file updated | 6 February 2020 13:57 CET | Update | https://www.mdpi.com/2304-6732/1/4/455 |
| article html file updated | 7 May 2019 04:55 CEST | Update | - |
| article html file updated | 25 March 2019 18:21 CET | Update | - |
| article html file updated | 21 August 2015 02:46 CEST | Update | - |
| article html file updated | 18 December 2014 11:38 CET | Original file | - |
| article xml file uploaded | 18 December 2014 11:38 CET | Original file | https://www.mdpi.com/2304-6732/1/4/455/xml |
| article pdf uploaded. | 27 November 2014 09:26 CET | Updated version of record | https://www.mdpi.com/2304-6732/1/4/455/pdf |
| article pdf uploaded. | 26 November 2014 15:26 CET | Version of Record | https://www.mdpi.com/2304-6732/1/4/455/pdf-vor |
