| article html file updated | 8 February 2020 05:32 CET | Update | https://www.mdpi.com/2218-1997/3/2/45 |
| article html file updated | 3 May 2019 22:39 CEST | Update | N/A |
| article html file updated | 30 June 2017 09:16 CEST | Update | N/A |
| article html file updated | 23 May 2017 04:00 CEST | Update | N/A |
| article html file updated | 10 May 2017 13:08 CEST | Original file | N/A |
| article xml uploaded. | 10 May 2017 13:06 CEST | Original file | https://www.mdpi.com/2218-1997/3/2/45/xml |
| article pdf uploaded. | 10 May 2017 13:06 CEST | Version of Record | https://www.mdpi.com/2218-1997/3/2/45/pdf |
