Mathematical Notes
Mathematical Notes > 2001 > 69 > 3-4 > 313-319
Mathematical Notes > 2001 > 70 > 3-4 > 560-573
Mathematical Notes > 2003 > 74 > 1-2 > 286-298
Mathematical Notes > 2006 > 80 > 1-2 > 114-126
Mathematical Notes > 2006 > 80 > 5-6 > 875-880
Mathematical Notes > 2006 > 80 > 5-6 > 673-678
Mathematical Notes > 2006 > 80 > 5-6 > 881-884
Mathematical Notes > 2007 > 82 > 1-2 > 165-173
Mathematical Notes > 2014 > 96 > 5-6 > 904-913
Mathematical Notes > 2014 > 96 > 5-6 > 878-896
Mathematical Notes > 2015 > 97 > 5-6 > 811-814
Mathematical Notes > 2019 > 106 > 1-2 > 191-202