CONSTRUCTION OF PYRIMIDO (5,4-E)-AS-TRIAZINE, PURINE, V-TRIAZOLO (4,5-D) PYRIMIDINE AND PYRAZOLO-(3,4-D) PYRIMIDINE RING SYSTEMS FROM 5-ARYLAZO-6-ARYLIDENEHYDRAZINO-1,3-DIMETHYLURACILSNISHIGAKI S; ISHIBA M; FUKANI K et al.1982; J. HETEROCYCL. CHEM.; ISSN 0022-152X; USA; DA. 1982; VOL. 19; NO 4; PP. 769-773; BIBL. 15 REF.Article

Color character trainer aid for the blindIDE, H; ISHIBA, M.Transactions of the Institute of Electronics and Communication Engineers of Japan. Section E. 1986, Vol 69, Num 6, pp 730-731, issn 0387-236XArticle