| article html file updated | 7 February 2020 12:16 CET | Update | https://www.mdpi.com/2227-9717/4/3/23 |
| article html file updated | 5 May 2019 09:08 CEST | Update | - |
| article html file updated | 27 March 2019 11:20 CET | Update | - |
| article html file updated | 28 September 2016 22:52 CEST | Update | - |
| article html file updated | 25 July 2016 11:45 CEST | Original file | - |
| article xml uploaded. | 25 July 2016 11:43 CEST | Original file | https://www.mdpi.com/2227-9717/4/3/23/xml |
| article pdf uploaded. | 25 July 2016 11:43 CEST | Version of Record | https://www.mdpi.com/2227-9717/4/3/23/pdf |
