Results in Mathematics
Results in Mathematics > 2002 > 41 > 3-4 > 386-393
Results in Mathematics > 2017 > 71 > 3-4 > 1345-1357
Results in Mathematics > 2017 > 72 > 1-2 > 359-367
Results in Mathematics > 2017 > 72 > 4 > 2157-2164
Results in Mathematics > 2019 > 74 > 3 > 1-13