[1] M. Háčik:
A Note on Higher Monotonicity Properties of Certain Sturm-Liouville Functions. Archivum Mathematicum, Brno, XVI, (1980), 153 - 160.
MR 0594460
[2] L. Lorch L. Moser:
A Remark on Completely Monotonic Sequences with an Application to Summability. Canad. Math. Bull., б (1963), 171-173.
MR 0156127
[3] L. Lorch P. Szego:
Higher Monotonicity Properties of Certain Sturm-Liouville Functions. Acta Math. 109 (1963), 55-73.
MR 0147695
[4] L. Lorch M. E. Muldoon P. Szego:
Higher Monotonicity Properties of Ceгtain Sturm-Louville Functions III. Canad. Journ. of Maths., 22 (1970), 1238-1265.
MR 0274845
[5] L. Lorch M. E. Muldoon P. Szego:
Higher Monotonicity Properties of Certain Sturm-Liouville Functions IV. Canad, Journ. of Maths., 24 (1972), 349-368.
MR 0298113
[6] M. E. Muldoon:
Higher Monotonicity Properties of Certain Sturm-Liouville Functions V. Proceedings of Royal Society of Edinburgh, 77A (1977), 23-37.
MR 0445033 |
Zbl 0361.34027