| article html file updated | 7 February 2020 10:11 CET | Update | https://www.mdpi.com/2073-4441/8/6/254 |
| article html file updated | 5 May 2019 12:55 CEST | Update | - |
| article html file updated | 27 March 2019 07:31 CET | Update | - |
| article html file updated | 29 June 2016 12:23 CEST | Update | - |
| article html file updated | 15 June 2016 11:48 CEST | Original file | - |
| article xml uploaded. | 15 June 2016 11:47 CEST | Original file | https://www.mdpi.com/2073-4441/8/6/254/xml |
| article pdf uploaded. | 15 June 2016 11:47 CEST | Version of Record | https://www.mdpi.com/2073-4441/8/6/254/pdf |
