| article html file updated | 8 February 2020 03:25 CET | Update | https://www.mdpi.com/2220-9964/6/4/116 |
| article html file updated | 24 September 2019 06:45 CEST | Update | - |
| article html file updated | 4 May 2019 02:32 CEST | Update | - |
| article html file updated | 28 April 2017 08:17 CEST | Update | - |
| article html file updated | 13 April 2017 11:06 CEST | Original file | - |
| article xml uploaded. | 13 April 2017 11:05 CEST | Update | https://www.mdpi.com/2220-9964/6/4/116/xml |
| article pdf uploaded. | 13 April 2017 11:05 CEST | Updated version of record | https://www.mdpi.com/2220-9964/6/4/116/pdf |
| article pdf uploaded. | 12 April 2017 11:12 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/4/116/pdf-vor |
