http://dx.doi.org/10.17176/20210130-102620-0 https://verfassungsblog.de/now-you-see-it-now-you-dont/ Now you see it, now you don’t Steinbeis, Maximilian eng 2021-01-29 electronic resource text/html ddc:342 Verfassungsblog Verfassungsblog--2366-7044 CC BY-SA 4.0 On Putin's palace, private contracts and other matters that one doesn't see every day