| article html file updated | 8 February 2020 03:59 CET | Update | https://www.mdpi.com/2227-9717/5/2/18 |
| article html file updated | 24 September 2019 10:06 CEST | Update | - |
| article html file updated | 4 May 2019 01:28 CEST | Update | - |
| article html file updated | 29 June 2017 12:48 CEST | Update | - |
| article html file updated | 20 April 2017 11:27 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 11:26 CEST | Original file | https://www.mdpi.com/2227-9717/5/2/18/xml |
| article pdf uploaded. | 20 April 2017 11:26 CEST | Version of Record | https://www.mdpi.com/2227-9717/5/2/18/pdf |
