@article {30443,
	title = {Synthesis and tautomeric structure of 3,7-bis(arylazo)-6-methyl-2-phenyl-1H-imidazo[1,2-b]pyrazoles in ground and excited states},
	journal = { Tetrahedron},
	volume = {64},
	year = {2008},
	pages = {5524-5530},
	author = {Ahmad S. Shawali, and Mosselhi A. Mosselhi, and Farag M. A. Altablawy and Thoraya A. Farghaly and Nagla M. Tawfik}
}
