Lewdorowicz, Magdalena; Stepinski, Janusz; Kierzek, Ryszard; Jemielity, Jacek; Zuberek, Joanna; Yoffe, Yael; Shapira, Michal; Stolarski, Ryszard; Darzynkiewicz, Edward Nucleosides, Nucleotides and Nucleic Acids, 2007 , vol. 26, # 10-12 p. 1339 - 1348