| article html file updated | 8 February 2020 01:21 CET | Update | https://www.mdpi.com/2072-6643/9/3/273 |
| article html file updated | 23 September 2019 19:08 CEST | Update | - |
| article html file updated | 4 May 2019 06:59 CEST | Update | - |
| article html file updated | 28 March 2017 09:39 CEST | Update | - |
| article html file updated | 14 March 2017 04:11 CET | Original file | - |
| article xml uploaded. | 14 March 2017 04:10 CET | Original file | https://www.mdpi.com/2072-6643/9/3/273/xml |
| article pdf uploaded. | 14 March 2017 04:10 CET | Updated version of record | https://www.mdpi.com/2072-6643/9/3/273/pdf |
| article pdf uploaded. | 13 March 2017 09:38 CET | Version of Record | https://www.mdpi.com/2072-6643/9/3/273/pdf-vor |
