| article html file updated | 7 February 2020 10:28 CET | Update | https://www.mdpi.com/2073-4441/8/6/261 |
| article html file updated | 5 May 2019 12:23 CEST | Update | N/A |
| article html file updated | 27 March 2019 08:00 CET | Update | N/A |
| article html file updated | 29 June 2016 12:25 CEST | Update | N/A |
| article html file updated | 21 June 2016 08:53 CEST | Original file | N/A |
| article xml uploaded. | 21 June 2016 08:52 CEST | Original file | https://www.mdpi.com/2073-4441/8/6/261/xml |
| article pdf uploaded. | 21 June 2016 08:52 CEST | Version of Record | https://www.mdpi.com/2073-4441/8/6/261/pdf |
