@article{RM_2010_65_2_a0,
     author = {S. V. Bolotin and D. V. Treschev},
     title = {Hill's formula},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {191--257},
     publisher = {mathdoc},
     volume = {65},
     number = {2},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2010_65_2_a0/}
}