| article html file updated | 8 February 2020 03:31 CET | Update | https://www.mdpi.com/2075-4701/7/4/138 |
| article html file updated | 24 September 2019 07:19 CEST | Update | - |
| article html file updated | 4 May 2019 02:21 CEST | Update | - |
| article html file updated | 28 April 2017 06:59 CEST | Update | - |
| article html file updated | 13 April 2017 12:57 CEST | Original file | - |
| article xml uploaded. | 13 April 2017 12:55 CEST | Update | https://www.mdpi.com/2075-4701/7/4/138/xml |
| article pdf uploaded. | 13 April 2017 12:55 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/4/138/pdf |
