| article html file updated | 7 February 2020 22:35 CET | Update | https://www.mdpi.com/2073-4352/7/2/37 |
| article html file updated | 23 September 2019 03:24 CEST | Update | - |
| article html file updated | 4 May 2019 12:53 CEST | Update | - |
| article html file updated | 2 March 2017 03:38 CET | Update | - |
| article html file updated | 14 February 2017 12:38 CET | Original file | - |
| article xml uploaded. | 14 February 2017 12:36 CET | Original file | https://www.mdpi.com/2073-4352/7/2/37/xml |
| article pdf uploaded. | 14 February 2017 12:36 CET | Updated version of record | https://www.mdpi.com/2073-4352/7/2/37/pdf |
| article pdf uploaded. | 2 February 2017 12:15 CET | Version of Record | https://www.mdpi.com/2073-4352/7/2/37/pdf-vor |
