| article html file updated | 7 February 2020 03:58 CET | Update | https://www.mdpi.com/1422-0067/17/2/168 |
| article html file updated | 6 May 2019 01:33 CEST | Update | - |
| article html file updated | 26 March 2019 19:32 CET | Original file | - |
| article pdf uploaded. | 28 January 2016 08:54 CET | Version of Record | https://www.mdpi.com/1422-0067/17/2/168/pdf |
| article xml uploaded. | 28 January 2016 08:54 CET | Original file | https://www.mdpi.com/1422-0067/17/2/168/xml |
