| article html file updated | 8 February 2020 06:56 CET | Update | https://www.mdpi.com/2072-6643/9/6/555 |
| article html file updated | 25 September 2019 01:32 CEST | Update | - |
| article html file updated | 3 May 2019 19:59 CEST | Update | - |
| article html file updated | 29 June 2017 11:42 CEST | Update | - |
| article html file updated | 28 May 2017 09:50 CEST | Original file | - |
| article xml uploaded. | 28 May 2017 09:49 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/555/xml |
| article pdf uploaded. | 28 May 2017 09:49 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/555/pdf |
