| article html file updated | 8 February 2020 02:03 CET | Update | https://www.mdpi.com/2227-7390/5/2/20 |
| article html file updated | 23 September 2019 23:15 CEST | Update | N/A |
| article html file updated | 4 May 2019 05:26 CEST | Update | N/A |
| article html file updated | 29 June 2017 11:35 CEST | Update | N/A |
| article html file updated | 27 March 2017 08:05 CEST | Original file | N/A |
| article xml uploaded. | 27 March 2017 08:04 CEST | Original file | https://www.mdpi.com/2227-7390/5/2/20/xml |
| article pdf uploaded. | 27 March 2017 08:04 CEST | Updated version of record | https://www.mdpi.com/2227-7390/5/2/20/pdf |
| article pdf uploaded. | 23 March 2017 10:35 CET | Version of Record | https://www.mdpi.com/2227-7390/5/2/20/pdf-vor |
