| article html file updated | 8 February 2020 03:59 CET | Update | https://www.mdpi.com/2077-1444/8/4/72 |
| article html file updated | 4 May 2019 01:27 CEST | Update | N/A |
| article html file updated | 28 April 2017 07:14 CEST | Update | N/A |
| article html file updated | 20 April 2017 12:11 CEST | Update | N/A |
| article html file updated | 20 April 2017 12:11 CEST | Update | N/A |
| article html file updated | 20 April 2017 12:11 CEST | Original file | N/A |
| article xml uploaded. | 20 April 2017 12:10 CEST | Original file | https://www.mdpi.com/2077-1444/8/4/72/xml |
| article pdf uploaded. | 20 April 2017 12:10 CEST | Version of Record | https://www.mdpi.com/2077-1444/8/4/72/pdf |
