| article html file updated | 8 February 2020 05:28 CET | Update | https://www.mdpi.com/2311-7524/3/2/33 |
| article html file updated | 24 September 2019 17:54 CEST | Update | - |
| article html file updated | 3 May 2019 22:46 CEST | Update | - |
| article html file updated | 23 May 2017 03:57 CEST | Update | - |
| article html file updated | 10 May 2017 10:00 CEST | Original file | - |
| article xml uploaded. | 10 May 2017 09:58 CEST | Update | https://www.mdpi.com/2311-7524/3/2/33/xml |
| article pdf uploaded. | 10 May 2017 09:58 CEST | Version of Record | https://www.mdpi.com/2311-7524/3/2/33/pdf |
