| article html file updated | 6 February 2020 18:01 CET | Update | https://www.mdpi.com/2075-4450/6/2/419 |
| article html file updated | 6 May 2019 21:15 CEST | Update | N/A |
| article html file updated | 26 March 2019 01:21 CET | Update | N/A |
| article html file updated | 21 August 2015 11:08 CEST | Update | N/A |
| article html file updated | 3 July 2015 12:26 CEST | Original file | N/A |
| article xml file uploaded | 3 July 2015 12:26 CEST | Original file | https://www.mdpi.com/2075-4450/6/2/419/xml |
| article pdf uploaded. | 24 April 2015 11:11 CEST | Version of Record | https://www.mdpi.com/2075-4450/6/2/419/pdf |
