| article html file updated | 6 February 2020 09:11 CET | Update | https://www.mdpi.com/2075-4426/4/2/218 |
| article html file updated | 7 May 2019 14:40 CEST | Update | N/A |
| article html file updated | 21 March 2019 16:54 CET | Update | N/A |
| article html file updated | 20 August 2015 06:34 CEST | Update | N/A |
| article html file updated | 24 July 2014 10:23 CEST | Original file | N/A |
| article xml file uploaded | 24 July 2014 10:23 CEST | Original file | https://www.mdpi.com/2075-4426/4/2/218/xml |
| article pdf uploaded. | 12 May 2014 15:06 CEST | Version of Record | https://www.mdpi.com/2075-4426/4/2/218/pdf |
