@article {70755,
	title = {In situ modified ion selective electrodes for potentiometric determination Sidenafil citrate and some of its formulations.},
	journal = {Journal of Pharmacy Research },
	volume = {8},
	year = {2014},
	pages = {437-447},
	author = {Faten A. Nour El-Dien and Gehad G. Mohamed and Eman Y. Z. Frag and Marwa M. A.  Diab}
}
