| article html file updated | 8 February 2020 02:24 CET | Update | https://www.mdpi.com/2072-6694/9/4/29 |
| article html file updated | 24 September 2019 01:06 CEST | Update | - |
| article html file updated | 4 May 2019 04:42 CEST | Update | - |
| article html file updated | 28 April 2017 05:34 CEST | Update | - |
| article html file updated | 28 March 2017 12:00 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 11:35 CEST | Original file | https://www.mdpi.com/2072-6694/9/4/29/xml |
| article pdf uploaded. | 28 March 2017 11:35 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/4/29/pdf |
