@article{TMF_2010_162_3_a5,
     author = {M. K. Balasubramanya},
     title = {The~action variable and frequency of a~relativistic harmonic oscillator},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {408--415},
     year = {2010},
     volume = {162},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2010_162_3_a5/}
}