| article html file updated | 7 February 2020 08:09 CET | Update | https://www.mdpi.com/2304-6740/4/2/13 |
| article html file updated | 5 May 2019 16:51 CEST | Update | - |
| article html file updated | 27 March 2019 03:40 CET | Update | - |
| article html file updated | 1 July 2016 12:00 CEST | Update | - |
| article html file updated | 4 May 2016 14:20 CEST | Original file | - |
| article xml uploaded. | 4 May 2016 14:18 CEST | Original file | https://www.mdpi.com/2304-6740/4/2/13/xml |
| article pdf uploaded. | 4 May 2016 14:18 CEST | Version of Record | https://www.mdpi.com/2304-6740/4/2/13/pdf |
