| article html file updated | 8 February 2020 02:25 CET | Update | https://www.mdpi.com/2075-4450/8/2/39 |
| article html file updated | 24 September 2019 01:12 CEST | Update | - |
| article html file updated | 4 May 2019 04:40 CEST | Update | - |
| article html file updated | 30 June 2017 05:42 CEST | Update | - |
| article html file updated | 29 March 2017 08:37 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 08:36 CEST | Update | https://www.mdpi.com/2075-4450/8/2/39/xml |
| article pdf uploaded. | 28 March 2017 15:15 CEST | Version of Record | https://www.mdpi.com/2075-4450/8/2/39/pdf |
