| article html file updated | 8 February 2020 03:58 CET | Update | https://www.mdpi.com/2076-3263/7/2/31 |
| article html file updated | 24 September 2019 10:02 CEST | Update | - |
| article html file updated | 4 May 2019 01:29 CEST | Update | - |
| article html file updated | 25 July 2017 10:27 CEST | Update | - |
| article html file updated | 20 April 2017 11:00 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 10:58 CEST | Original file | https://www.mdpi.com/2076-3263/7/2/31/xml |
| article pdf uploaded. | 20 April 2017 10:58 CEST | Version of Record | https://www.mdpi.com/2076-3263/7/2/31/pdf |
