| article html file updated | 7 February 2020 06:55 CET | Update | https://new.mdpi.com/2073-4441/8/4/136 |
| article html file updated | 5 May 2019 19:24 CEST | Update | - |
| article html file updated | 27 March 2019 01:12 CET | Update | - |
| article html file updated | 28 April 2016 12:21 CEST | Update | - |
| article html file updated | 7 April 2016 12:10 CEST | Original file | - |
| article xml uploaded. | 7 April 2016 12:09 CEST | Original file | https://new.mdpi.com/2073-4441/8/4/136/xml |
| article pdf uploaded. | 7 April 2016 12:09 CEST | Version of Record | https://new.mdpi.com/2073-4441/8/4/136/pdf |
