| article html file updated | 8 February 2020 08:23 CET | Update | https://www.mdpi.com/2311-7524/3/2/39 |
| article html file updated | 25 September 2019 09:00 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:16 CEST | Update | N/A |
| article html file updated | 15 June 2017 13:55 CEST | Original file | N/A |
| article xml uploaded. | 15 June 2017 13:54 CEST | Original file | https://www.mdpi.com/2311-7524/3/2/39/xml |
| article pdf uploaded. | 15 June 2017 13:54 CEST | Version of Record | https://www.mdpi.com/2311-7524/3/2/39/pdf |
