| article html file updated | 8 February 2020 20:32 CET | Update | https://www.mdpi.com/2076-3271/5/4/26 |
| article html file updated | 28 September 2019 07:09 CEST | Update | - |
| article html file updated | 2 May 2019 16:30 CEST | Update | - |
| article html file updated | 14 March 2018 17:46 CET | Update | - |
| article html file updated | 8 November 2017 05:09 CET | Original file | - |
| article xml uploaded. | 8 November 2017 05:08 CET | Original file | https://www.mdpi.com/2076-3271/5/4/26/xml |
| article pdf uploaded. | 8 November 2017 05:08 CET | Updated version of record | https://www.mdpi.com/2076-3271/5/4/26/pdf |
| article pdf uploaded. | 7 November 2017 12:15 CET | Version of Record | https://www.mdpi.com/2076-3271/5/4/26/pdf-vor |
