Results in Mathematics
Results in Mathematics > 1997 > 31 > 1-2 > 115-126
Results in Mathematics > 1997 > 31 > 1-2 > 53-74
Results in Mathematics > 2002 > 42 > 3-4 > 277-288
Results in Mathematics > 2017 > 71 > 3-4 > 1359-1372
Results in Mathematics > 2019 > 74 > 4 > 1-12