@article{SMJ2_2015_41_4_a11,
     author = {Boyadzhiev, Georgi},
     title = {Bi-Characteristic {Curves} of {Body} and {Surface} {Waves} and {Application} in {Geophysics}},
     journal = {Serdica Mathematical Journal},
     pages = {513--526},
     publisher = {mathdoc},
     volume = {41},
     number = {4},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2015_41_4_a11/}
}