| article html file updated | 8 February 2020 03:48 CET | Update | https://www.mdpi.com/2073-4425/8/4/121 |
| article html file updated | 24 September 2019 09:03 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:48 CEST | Update | N/A |
| article html file updated | 28 April 2017 06:46 CEST | Update | N/A |
| article html file updated | 18 April 2017 11:37 CEST | Original file | N/A |
| article xml uploaded. | 18 April 2017 11:35 CEST | Original file | https://www.mdpi.com/2073-4425/8/4/121/xml |
| article pdf uploaded. | 18 April 2017 11:35 CEST | Version of Record | https://www.mdpi.com/2073-4425/8/4/121/pdf |
