| article html file updated | 7 February 2020 23:53 CET | Update | https://www.mdpi.com/2072-6643/9/2/168 |
| article html file updated | 23 September 2019 10:40 CEST | Update | N/A |
| article html file updated | 4 May 2019 10:16 CEST | Update | N/A |
| article html file updated | 2 March 2017 03:56 CET | Update | N/A |
| article html file updated | 21 February 2017 12:09 CET | Original file | N/A |
| article xml uploaded. | 21 February 2017 12:08 CET | Original file | https://www.mdpi.com/2072-6643/9/2/168/xml |
| article pdf uploaded. | 21 February 2017 12:08 CET | Version of Record | https://www.mdpi.com/2072-6643/9/2/168/pdf |
