| article html file updated | 8 February 2020 20:16 CET | Update | https://www.mdpi.com/2075-4450/8/4/121 |
| article html file updated | 28 September 2019 05:15 CEST | Update | N/A |
| article html file updated | 2 May 2019 17:08 CEST | Update | N/A |
| article html file updated | 2 January 2018 12:35 CET | Update | N/A |
| article html file updated | 3 November 2017 10:56 CET | Original file | N/A |
| article xml uploaded. | 3 November 2017 10:55 CET | Original file | https://www.mdpi.com/2075-4450/8/4/121/xml |
| article pdf uploaded. | 3 November 2017 10:55 CET | Version of Record | https://www.mdpi.com/2075-4450/8/4/121/pdf |
