| article html file updated | 8 February 2020 01:31 CET | Update | https://www.mdpi.com/1422-0067/18/3/640 |
| article html file updated | 23 September 2019 20:05 CEST | Update | - |
| article html file updated | 4 May 2019 06:37 CEST | Update | - |
| article html file updated | 30 March 2017 10:47 CEST | Update | - |
| article html file updated | 17 March 2017 07:12 CET | Original file | - |
| article xml uploaded. | 17 March 2017 07:11 CET | Original file | https://www.mdpi.com/1422-0067/18/3/640/xml |
| article pdf uploaded. | 17 March 2017 07:11 CET | Updated version of record | https://www.mdpi.com/1422-0067/18/3/640/pdf |
| article pdf uploaded. | 15 March 2017 11:52 CET | Version of Record | https://www.mdpi.com/1422-0067/18/3/640/pdf-vor |
