| article html file updated | 8 February 2020 14:38 CET | Update | https://www.mdpi.com/2073-4352/7/9/257 |
| article html file updated | 26 September 2019 18:55 CEST | Update | N/A |
| article html file updated | 3 May 2019 04:52 CEST | Update | N/A |
| article html file updated | 30 September 2017 08:40 CEST | Update | N/A |
| article html file updated | 28 August 2017 04:36 CEST | Original file | N/A |
| article xml uploaded. | 28 August 2017 04:35 CEST | Original file | https://www.mdpi.com/2073-4352/7/9/257/xml |
| article pdf uploaded. | 28 August 2017 04:35 CEST | Version of Record | https://www.mdpi.com/2073-4352/7/9/257/pdf |
