OH 1720-MHz Observations toward Northern Class I Methanol Masers with 70-m Ukrainian Telescope.
Proceedings article published in 2011 by
G.~M Larionov,
I.~D Litovchenko,
O.~S Bayandina 
,
I.~E Val'tts,
A. Alakoz,
D. Mukha,
A.~S Nabatov,
A.~A Konovalenko,
Zakharenko,
E. Alekseev,
V.~S Nikolaenko,
V.~F Kulishenko,
S.~A Odincov
,
I.~E Val'tts,
A. Alakoz,
D. Mukha,
A.~S Nabatov,
A.~A Konovalenko,
Zakharenko,
E. Alekseev,
V.~S Nikolaenko,
V.~F Kulishenko,
S.~A Odincov
