| article html file updated | 8 February 2020 01:44 CET | Update | https://www.mdpi.com/2079-4991/7/3/68 |
| article html file updated | 23 September 2019 21:21 CEST | Update | - |
| article html file updated | 4 May 2019 06:06 CEST | Update | - |
| article html file updated | 30 March 2017 12:00 CEST | Update | - |
| article html file updated | 22 March 2017 13:29 CET | Update | - |
| article xml uploaded. | 22 March 2017 13:27 CET | Update | https://www.mdpi.com/2079-4991/7/3/68/xml |
| article pdf uploaded. | 22 March 2017 13:27 CET | Updated version of record | https://www.mdpi.com/2079-4991/7/3/68/pdf |
| article html file updated | 18 March 2017 11:07 CET | Original file | - |
| article pdf uploaded. | 18 March 2017 11:05 CET | Version of Record | https://www.mdpi.com/2079-4991/7/3/68/pdf-vor |
