| article html file updated | 8 February 2020 06:45 CET | Update | https://www.mdpi.com/2075-4450/8/2/55 |
| article html file updated | 25 September 2019 00:35 CEST | Update | N/A |
| article html file updated | 3 May 2019 20:20 CEST | Update | N/A |
| article html file updated | 30 June 2017 05:41 CEST | Update | N/A |
| article html file updated | 25 May 2017 15:18 CEST | Original file | N/A |
| article xml uploaded. | 25 May 2017 15:17 CEST | Original file | https://www.mdpi.com/2075-4450/8/2/55/xml |
| article pdf uploaded. | 25 May 2017 15:17 CEST | Version of Record | https://www.mdpi.com/2075-4450/8/2/55/pdf |
