| article html file updated | 7 February 2020 22:58 CET | Update | https://www.mdpi.com/2073-4433/8/2/18 |
| article html file updated | 23 September 2019 05:36 CEST | Update | - |
| article html file updated | 4 May 2019 12:06 CEST | Update | - |
| article html file updated | 28 February 2017 11:01 CET | Update | - |
| article html file updated | 9 February 2017 10:39 CET | Original file | - |
| article xml uploaded. | 9 February 2017 10:37 CET | Original file | https://www.mdpi.com/2073-4433/8/2/18/xml |
| article pdf uploaded. | 9 February 2017 10:37 CET | Version of Record | https://www.mdpi.com/2073-4433/8/2/18/pdf |
