| article html file updated | 7 February 2020 07:38 CET | Update | https://www.mdpi.com/2220-9964/5/4/53 |
| article html file updated | 5 May 2019 17:53 CEST | Update | - |
| article html file updated | 27 March 2019 02:40 CET | Update | - |
| article html file updated | 27 April 2016 10:23 CEST | Update | - |
| article html file updated | 22 April 2016 09:51 CEST | Original file | - |
| article xml uploaded. | 22 April 2016 09:50 CEST | Update | https://www.mdpi.com/2220-9964/5/4/53/xml |
| article pdf uploaded. | 22 April 2016 09:50 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/4/53/pdf |
