Stoyanov, S., Filipova, M. Research of the variations of the atmospheric ozone and change of the ultraviolet sun radiation over northeastern Bulgaria,
, , ISSN 1314-6289.
Stoyanov, S., Filipova, M. .
Research of the variations of the atmospheric ozone and change of the ultraviolet sun radiation over northeastern Bulgaria.
: , , ISSN 1314-6289.
Stoyanov, S., Filipova, M. ()
Research of the variations of the atmospheric ozone and change of the ultraviolet sun radiation over northeastern Bulgaria,
: , ISSN 1314-6289
Stoyanov, S., & Filipova, M.
().
Research of the variations of the atmospheric ozone and change of the ultraviolet sun radiation over northeastern Bulgaria. // <I>J.<D> Sci. appl. research, 1, 2012, р. 90-93..