| article html file updated | 8 February 2020 00:19 CET | Update | https://www.mdpi.com/2073-8994/9/3/31 |
| article html file updated | 23 September 2019 13:11 CEST | Update | - |
| article html file updated | 4 May 2019 09:20 CEST | Update | - |
| article html file updated | 28 March 2017 03:18 CEST | Update | - |
| article html file updated | 26 February 2017 04:14 CET | Original file | - |
| article xml uploaded. | 26 February 2017 04:13 CET | Update | https://www.mdpi.com/2073-8994/9/3/31/xml |
| article xml uploaded. | 26 February 2017 04:13 CET | Original file | - |
| article pdf uploaded. | 26 February 2017 04:13 CET | Version of Record | https://www.mdpi.com/2073-8994/9/3/31/pdf |
