@article {6080,
	title = {Study of invariant Tc in higher doping level Y 1-xCaxBa2-xLaxCu3O y},
	journal = {International Journal of Modern Physics B},
	year = {2005},
	pages = {307-309},
	doi = {10.1142/S0217979205028463},
	author = {X.F. Sun and H.L. Du and X.F. Rui and L. Zhang and F. Wang and H. Zhang}
}
