| article html file updated | 8 February 2020 03:30 CET | Update | https://www.mdpi.com/2075-4701/7/4/137 |
| article html file updated | 24 September 2019 07:14 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:22 CEST | Update | N/A |
| article html file updated | 28 April 2017 06:58 CEST | Update | N/A |
| article html file updated | 13 April 2017 11:58 CEST | Original file | N/A |
| article xml uploaded. | 13 April 2017 11:57 CEST | Original file | https://www.mdpi.com/2075-4701/7/4/137/xml |
| article pdf uploaded. | 13 April 2017 11:57 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/4/137/pdf |
