| article html file updated | 7 February 2020 23:04 CET | Update | https://www.mdpi.com/2073-4441/9/2/108 |
| article html file updated | 23 September 2019 06:13 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:52 CEST | Update | N/A |
| article html file updated | 1 March 2017 08:05 CET | Update | N/A |
| article html file updated | 10 February 2017 12:25 CET | Original file | N/A |
| article xml uploaded. | 10 February 2017 12:24 CET | Original file | https://www.mdpi.com/2073-4441/9/2/108/xml |
| article pdf uploaded. | 10 February 2017 12:24 CET | Version of Record | https://www.mdpi.com/2073-4441/9/2/108/pdf |
