by Christensen, Ulf B., Wamberg, Michael, El-Essawy, Farag A. G., Ismail, Abd El-Hamid, Nielsen, Christina B., Filichev, Vyacheslav V., Jessen, Carsten H., Petersen, Michael, Pedersen, Erik B.
Published in Nucleosides, nucleotides & nucleic acids (01.01.2004)

by El-Essawy, Farag A. G, Yassin, Salah M, El-Sakka, Ibrahim A, Khattab, Ahmed F, Søtofte, Inger, Madsen, Jørgen Øgaard, Senning, Alexander
Published in Journal of organic chemistry (25.12.1998)

by Senning, Alexander, El-Essawy, Farag A. G., Hegab, Mohamed I.
Published in Phosphorus, sulfur, and silicon and the related elements (01.01.1999)