| article html file updated | 8 February 2020 01:41 CET | Update | https://www.mdpi.com/2073-4360/9/3/109 |
| article html file updated | 23 September 2019 21:04 CEST | Update | - |
| article html file updated | 4 May 2019 06:13 CEST | Update | - |
| article html file updated | 20 March 2019 06:24 CET | Update | - |
| article html file updated | 29 March 2017 05:50 CEST | Update | - |
| article html file updated | 17 March 2017 14:03 CET | Original file | - |
| article xml uploaded. | 17 March 2017 14:01 CET | Original file | https://www.mdpi.com/2073-4360/9/3/109/xml |
| article pdf uploaded. | 17 March 2017 14:01 CET | Version of Record | https://www.mdpi.com/2073-4360/9/3/109/pdf |
