Novel pyridyl-substituted coumarin and its perchlorate salt–crystal structure and spectroscopic properties.Published in:Journal of Physical Organic Chemistry, 2009, v. 22, n. 8, p. 726, doi. 10.1002/poc.1507By:Koleva, B. B.;Nikolova, R.;Zareva, S.;Kolev, T.;Seidel, R. W.;Mayer-Figge, H.;Sheldrick, W. S.Publication type:Article