| article html file updated | 7 February 2020 22:42 CET | Update | https://www.mdpi.com/2072-6643/9/2/111 |
| article html file updated | 23 September 2019 04:06 CEST | Update | - |
| article html file updated | 4 May 2019 12:39 CEST | Update | - |
| article html file updated | 2 March 2017 03:47 CET | Update | - |
| article html file updated | 5 February 2017 06:50 CET | Original file | - |
| article xml uploaded. | 5 February 2017 06:48 CET | Original file | https://www.mdpi.com/2072-6643/9/2/111/xml |
| article pdf uploaded. | 5 February 2017 06:48 CET | Version of Record | https://www.mdpi.com/2072-6643/9/2/111/pdf |
