| article html file updated | 8 February 2020 03:31 CET | Update | https://www.mdpi.com/2075-4698/7/2/6 |
| article html file updated | 24 September 2019 07:18 CEST | Update | - |
| article html file updated | 4 May 2019 02:21 CEST | Update | - |
| article html file updated | 30 June 2017 09:14 CEST | Update | - |
| article html file updated | 14 April 2017 05:22 CEST | Update | - |
| article xml uploaded. | 14 April 2017 05:21 CEST | Update | https://www.mdpi.com/2075-4698/7/2/6/xml |
| article pdf uploaded. | 14 April 2017 05:21 CEST | Updated version of record | https://www.mdpi.com/2075-4698/7/2/6/pdf |
| article html file updated | 13 April 2017 15:46 CEST | Original file | - |
