@article{muldoon:1977:hmp,
    author = {Muldoon, M. E.},
     title = {Higher monotonicity properties of certain {S}turm-{L}iouville
              functions. {V}},
   journal = {Proc. Roy. Soc. Edinburgh Sect. A},
    volume = {77},
      year = {1977},
    number = {1-2},
     pages = {23–37},
   mrclass = {33A40 (34C10)},
  mrnumber = {MR0445033 (56 \#3378)},
mrreviewer = {G. Sansone},
     zblno = {0361.34027}}