@article{10_4153_CMB_1997_049_x,
     author = {Clemence, Dominic P.},
     title = {On the {Singular} {Behaviour} of the {Titchmarsh-Weyl} {m-Function} for the {Perturbed} {Hill{\textquoteright}s} {Equation} on the {Line}},
     journal = {Canadian mathematical bulletin},
     pages = {416--421},
     year = {1997},
     volume = {40},
     number = {4},
     doi = {10.4153/CMB-1997-049-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1997-049-x/}
}