| article html file updated | 7 February 2020 20:46 CET | Update | https://www.mdpi.com/2076-3417/7/1/38 |
| article html file updated | 22 September 2019 17:46 CEST | Update | - |
| article html file updated | 4 May 2019 16:50 CEST | Update | - |
| article html file updated | 8 February 2017 09:08 CET | Update | - |
| article html file updated | 4 January 2017 10:22 CET | Original file | - |
| article xml uploaded. | 4 January 2017 10:21 CET | Original file | https://www.mdpi.com/2076-3417/7/1/38/xml |
| article pdf uploaded. | 4 January 2017 10:21 CET | Version of Record | https://www.mdpi.com/2076-3417/7/1/38/pdf |
