| article html file updated | 8 February 2020 02:07 CET | Update | https://www.mdpi.com/2073-4352/7/4/89 |
| article html file updated | 4 May 2019 05:17 CEST | Update | - |
| article html file updated | 28 April 2017 05:46 CEST | Update | - |
| article html file updated | 27 March 2017 05:29 CEST | Update | - |
| article html file updated | 23 March 2017 12:31 CET | Original file | - |
| article xml uploaded. | 23 March 2017 12:30 CET | Original file | https://www.mdpi.com/2073-4352/7/4/89/xml |
| article pdf uploaded. | 23 March 2017 12:30 CET | Version of Record | https://www.mdpi.com/2073-4352/7/4/89/pdf |
