%0 Conference Article %T Study of a compact source with an enhanced NH$_2$D/NH$_3$ abundance ratio in the S187 region %A Trofimova, E.. %A Zinchenko, I.. %A Zemlyanukha, P.. %A Punanova, A.. %A Henkel, C.. %K ISM: clouds, molecules; individual: S187 %J Modern astronomy: from the Early Universe to exoplanets and black holes %D 2024 %P 3 %I Special Astrophysical Observatory of the Russian Academy of Sciences