| article html file updated | 8 February 2020 02:21 CET | Update | https://www.mdpi.com/2072-6643/9/4/331 |
| article html file updated | 24 September 2019 00:52 CEST | Update | - |
| article html file updated | 4 May 2019 04:48 CEST | Update | - |
| article html file updated | 28 April 2017 11:44 CEST | Update | - |
| article html file updated | 27 March 2017 14:14 CEST | Original file | - |
| article xml uploaded. | 27 March 2017 14:13 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/331/xml |
| article pdf uploaded. | 27 March 2017 14:13 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/331/pdf |
