| article html file updated | 7 February 2020 20:40 CET | Update | https://www.mdpi.com/2220-9964/6/1/5 |
| article html file updated | 22 September 2019 17:14 CEST | Update | - |
| article html file updated | 4 May 2019 17:03 CEST | Update | - |
| article html file updated | 8 February 2017 08:43 CET | Update | - |
| article html file updated | 6 January 2017 09:13 CET | Original file | - |
| article xml uploaded. | 6 January 2017 09:12 CET | Original file | https://www.mdpi.com/2220-9964/6/1/5/xml |
| article pdf uploaded. | 6 January 2017 09:12 CET | Updated version of record | https://www.mdpi.com/2220-9964/6/1/5/pdf |
| article pdf uploaded. | 1 January 2017 09:50 CET | Version of Record | https://www.mdpi.com/2220-9964/6/1/5/pdf-vor |
