| article html file updated | 8 February 2020 03:15 CET | Update | https://www.mdpi.com/2075-4701/7/4/131 |
| article html file updated | 24 September 2019 05:56 CEST | Update | - |
| article html file updated | 4 May 2019 02:51 CEST | Update | - |
| article html file updated | 28 April 2017 06:57 CEST | Update | - |
| article html file updated | 10 April 2017 15:11 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 15:09 CEST | Original file | https://www.mdpi.com/2075-4701/7/4/131/xml |
| article pdf uploaded. | 10 April 2017 15:09 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/4/131/pdf |
