@article{ZNSL_2007_342_a9,
     author = {L. A. Molotkov},
     title = {Investigation of front tangency of two transversal waves in transverse isotropic elastic media},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {206--216},
     publisher = {mathdoc},
     volume = {342},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2007_342_a9/}
}