| article html file updated | 6 February 2020 12:15 CET | Update | https://www.mdpi.com/2226-4787/2/3/244 |
| article html file updated | 20 September 2019 12:56 CEST | Update | N/A |
| article html file updated | 7 May 2019 08:17 CEST | Update | N/A |
| article html file updated | 22 March 2019 00:55 CET | Update | N/A |
| article html file updated | 20 August 2015 19:18 CEST | Original file | N/A |
| article pdf uploaded. | 17 September 2014 08:26 CEST | Updated version of record | https://www.mdpi.com/2226-4787/2/3/244/pdf |
| article pdf uploaded. | 16 September 2014 12:42 CEST | Version of Record | https://www.mdpi.com/2226-4787/2/3/244/pdf-vor |
