Artículo original
Synthesis and spectral characterization of some new 2-(substituted)-5-methyl/chloro-2,3-dihydro-1,3,2 ¬5- benzoxazaphosphol - 2 -thiones / -2- ones
N.Suresh, C.Venkateswarlu, K.Sri Devi, C.V.Nageswara Rao, G.S.Sastry3, C.Sampath