| article html file updated | 6 February 2020 15:43 CET | Update | https://www.mdpi.com/2072-6643/7/2/1021 |
| article html file updated | 7 May 2019 01:26 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:23 CET | Update | N/A |
| article html file updated | 21 August 2015 07:04 CEST | Update | N/A |
| article html file updated | 28 February 2015 03:11 CET | Original file | N/A |
| article xml file uploaded | 28 February 2015 03:11 CET | Original file | https://www.mdpi.com/2072-6643/7/2/1021/xml |
| article pdf uploaded. | 4 February 2015 11:40 CET | Version of Record | https://www.mdpi.com/2072-6643/7/2/1021/pdf |
