| article html file updated | 7 February 2020 16:32 CET | Update | https://www.mdpi.com/2073-4395/6/4/48 |
| article html file updated | 22 September 2019 03:15 CEST | Update | N/A |
| article html file updated | 5 May 2019 01:18 CEST | Update | N/A |
| article html file updated | 29 December 2016 04:30 CET | Update | N/A |
| article html file updated | 18 October 2016 11:07 CEST | Original file | N/A |
| article xml uploaded. | 18 October 2016 11:06 CEST | Original file | https://www.mdpi.com/2073-4395/6/4/48/xml |
| article pdf uploaded. | 18 October 2016 11:06 CEST | Version of Record | https://www.mdpi.com/2073-4395/6/4/48/pdf |
