@article{ZNSL_2003_300_a17,
     author = {O. Yu. Koltsova},
     title = {On {Hamiltonian} systems with homoclinic orbit to a~saddle-center},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {187--193},
     publisher = {mathdoc},
     volume = {300},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2003_300_a17/}
}