| article html file updated | 8 February 2020 03:49 CET | Update | https://www.mdpi.com/2072-6643/9/4/399 |
| article html file updated | 24 September 2019 09:08 CEST | Update | - |
| article html file updated | 4 May 2019 01:46 CEST | Update | - |
| article html file updated | 28 April 2017 11:52 CEST | Update | - |
| article html file updated | 18 April 2017 12:13 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 12:12 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/399/xml |
| article pdf uploaded. | 18 April 2017 12:12 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/399/pdf |
