| article html file updated | 7 February 2020 22:14 CET | Update | https://www.mdpi.com/2306-5338/4/1/7 |
| article html file updated | 23 September 2019 01:34 CEST | Update | N/A |
| article html file updated | 4 May 2019 13:35 CEST | Update | N/A |
| article html file updated | 25 January 2017 11:07 CET | Original file | N/A |
| article xml uploaded. | 25 January 2017 11:06 CET | Update | https://www.mdpi.com/2306-5338/4/1/7/xml |
| article xml uploaded. | 25 January 2017 11:06 CET | Original file | N/A |
| article pdf uploaded. | 25 January 2017 11:06 CET | Version of Record | https://www.mdpi.com/2306-5338/4/1/7/pdf |
