| article html file updated | 8 February 2020 03:24 CET | Update | https://www.mdpi.com/2076-2607/5/2/18 |
| article html file updated | 24 September 2019 06:44 CEST | Update | - |
| article html file updated | 4 May 2019 02:32 CEST | Update | - |
| article html file updated | 28 June 2017 14:08 CEST | Update | - |
| article html file updated | 12 April 2017 11:21 CEST | Original file | - |
| article xml uploaded. | 12 April 2017 11:20 CEST | Original file | https://www.mdpi.com/2076-2607/5/2/18/xml |
| article pdf uploaded. | 12 April 2017 11:20 CEST | Version of Record | https://www.mdpi.com/2076-2607/5/2/18/pdf |
