| article html file updated | 5 February 2020 12:01 CET | Update | https://www.mdpi.com/1422-8599/2003/1/M306 |
| article html file updated | 9 May 2019 12:01 CEST | Update | - |
| article html file updated | 19 March 2019 17:55 CET | Update | - |
| article html file updated | 26 September 2017 09:48 CEST | Update | - |
| article xml uploaded. | 26 September 2017 09:46 CEST | Update | https://www.mdpi.com/1422-8599/2003/1/M306/xml |
| article xml uploaded. | 26 September 2017 09:46 CEST | Update | - |
| article html file updated | 23 September 2017 08:56 CEST | Update | - |
| article xml uploaded. | 23 September 2017 08:55 CEST | Original file | - |
| article html file updated | 14 December 2016 09:02 CET | Original file | - |
