%0 Journal Article %A Ivanov, A. %A Georgiev, I. %A Dimitrov, N. %T Single spectrum analysis for monthly sea level data from Varna tide gauge station %D 2019 %J , %V 2019 %N 1 %P 1-5 %@ 2214-4609 %R https://doi.org/10.3997/2214-4609.201902664 %I European Association of Geoscientists & Engineers, %X %U https://www.earthdoc.org/content/papers/10.3997/2214-4609.201902664