Mathematical Notes
Mathematical Notes > 2003 > 74 > 5-6 > 607-618
Mathematical Notes > 2004 > 76 > 5-6 > 865-879
Mathematical Notes > 2005 > 77 > 1 > 140-145
Mathematical Notes > 2005 > 77 > 5-6 > 606-613
Mathematical Notes > 2005 > 78 > 1-2 > 289-293
Mathematical Notes > 2005 > 78 > 1-2 > 64-75
Mathematical Notes > 2006 > 79 > 5 > 886-891
Mathematical Notes > 2006 > 79 > 5-6 > 886-891
Mathematical Notes > 2006 > 80 > 1-2 > 65-71
Mathematical Notes > 2017 > 101 > 5-6 > 878-887