@article {chountasis2012whittaker,
	title = {The whittaker smoother and the moore-penrose inverse in signal reconstruction},
	journal = {Applied Mathematical Sciences},
	volume = {6},
	number = {25},
	year = {2012},
	pages = {1205{\textendash}1219},
	author = {Spiros Chountasis and Vasilios N. Katsikis and Dimitrios Pappas and Perperoglou, Aris}
}
