| article html file updated | 8 February 2020 02:37 CET | Update | https://www.mdpi.com/1422-0067/18/4/727 |
| article html file updated | 24 September 2019 02:24 CEST | Update | - |
| article html file updated | 4 May 2019 04:13 CEST | Update | - |
| article html file updated | 2 May 2017 05:52 CEST | Update | - |
| article html file updated | 31 March 2017 08:56 CEST | Original file | - |
| article xml uploaded. | 31 March 2017 08:55 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/727/xml |
| article pdf uploaded. | 31 March 2017 08:55 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/727/pdf |
