| article html file updated | 6 February 2020 15:53 CET | Update | https://www.mdpi.com/2073-4360/7/2/281 |
| article html file updated | 7 May 2019 01:07 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:39 CET | Update | N/A |
| article html file updated | 21 August 2015 07:26 CEST | Update | N/A |
| article html file updated | 15 February 2015 10:07 CET | Original file | N/A |
| article xml file uploaded | 15 February 2015 10:07 CET | Original file | https://www.mdpi.com/2073-4360/7/2/281/xml |
| article pdf uploaded. | 13 February 2015 08:25 CET | Updated version of record | https://www.mdpi.com/2073-4360/7/2/281/pdf |
| article pdf uploaded. | 11 February 2015 11:33 CET | Version of Record | https://www.mdpi.com/2073-4360/7/2/281/pdf-vor |
