| article html file updated | 9 February 2020 11:03 CET | Update | https://www.mdpi.com/2227-9091/6/2/25 |
| article html file updated | 1 May 2019 09:09 CEST | Update | - |
| article html file updated | 17 April 2019 09:04 CEST | Update | - |
| article html file updated | 29 March 2019 09:20 CET | Update | - |
| article html file updated | 27 June 2018 09:47 CEST | Update | - |
| article html file updated | 23 March 2018 18:04 CET | Original file | - |
| article xml uploaded. | 23 March 2018 18:03 CET | Original file | https://www.mdpi.com/2227-9091/6/2/25/xml |
| article pdf uploaded. | 23 March 2018 18:03 CET | Version of Record | https://www.mdpi.com/2227-9091/6/2/25/pdf |
