@article{VIROLAINEN15,
    author = "Ya. A. Virolainen and Yu. M. Timofeev and A. V. Poberovskii and
              O. Kirner and M. H{\"o}pfner",
    title  = "Chlorine Nitrate in the Atmosphere over {S}t. {P}etersburg",
    journal= "Izv. Atmos. Ocean. Phys.",
    volume = "51",
    number = "1",
    pages  = "49-56",
    year   = "2015"   }