Mathematical Notes
Mathematical Notes > 2014 > 95 > 1-2 > 91-97
Mathematical Notes > 2014 > 95 > 3-4 > 399-406
Mathematical Notes > 2014 > 95 > 5-6 > 670-685
Mathematical Notes > 2014 > 95 > 1-2 > 91-97
Mathematical Notes > 2014 > 95 > 3-4 > 399-406
Mathematical Notes > 2014 > 95 > 5-6 > 670-685