| article html file updated | 8 February 2020 02:10 CET | Update | https://www.mdpi.com/2072-6643/9/4/323 |
| article html file updated | 23 September 2019 23:50 CEST | Update | - |
| article html file updated | 4 May 2019 05:13 CEST | Update | - |
| article html file updated | 28 April 2017 11:55 CEST | Update | - |
| article html file updated | 27 March 2017 07:52 CEST | Original file | - |
| article xml uploaded. | 27 March 2017 07:51 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/323/xml |
| article pdf uploaded. | 27 March 2017 07:51 CEST | Updated version of record | https://www.mdpi.com/2072-6643/9/4/323/pdf |
| article pdf uploaded. | 24 March 2017 10:19 CET | Version of Record | https://www.mdpi.com/2072-6643/9/4/323/pdf-vor |
