| article html file updated | 8 February 2020 00:29 CET | Update | https://www.mdpi.com/2073-8994/9/3/34 |
| article html file updated | 23 September 2019 14:12 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:55 CEST | Update | N/A |
| article html file updated | 28 March 2017 03:23 CEST | Update | N/A |
| article html file updated | 3 March 2017 03:49 CET | Original file | N/A |
| article xml uploaded. | 3 March 2017 03:48 CET | Original file | https://www.mdpi.com/2073-8994/9/3/34/xml |
| article pdf uploaded. | 3 March 2017 03:48 CET | Updated version of record | https://www.mdpi.com/2073-8994/9/3/34/pdf |
| article pdf uploaded. | 28 February 2017 15:38 CET | Version of Record | https://www.mdpi.com/2073-8994/9/3/34/pdf-vor |
