| article html file updated | 6 February 2020 08:38 CET | Update | https://www.mdpi.com/2304-6732/1/2/67 |
| article html file updated | 7 May 2019 15:49 CEST | Update | N/A |
| article html file updated | 21 March 2019 15:36 CET | Update | N/A |
| article html file updated | 20 August 2015 03:23 CEST | Update | N/A |
| article html file updated | 24 June 2014 12:22 CEST | Original file | N/A |
| article xml file uploaded | 24 June 2014 12:22 CEST | Original file | https://www.mdpi.com/2304-6732/1/2/67/xml |
| article pdf uploaded. | 17 April 2014 09:46 CEST | Updated version of record | https://www.mdpi.com/2304-6732/1/2/67/pdf |
| article pdf uploaded. | 16 April 2014 09:52 CEST | Version of Record | https://www.mdpi.com/2304-6732/1/2/67/pdf-vor |
