[1] Best D G, de Casseres K E. Water Pollution Control, 1978, 77: 138.
[2] Dedkov Y M, Elizarova O V, Kel’ina S Y. Anal. Chem., 2000, 55: 777.
[5] Vasel J L, Praet E. Water Science and Technology, 2002, 45(4-5): 109.
[6] Paatero P, Tapper U. Environmetrics, 1994, 5(2):111.
[7] Farial S, Berry M W, Paul P V, et al. Information Processing and Management, 2006, 42(2): 373.
[8] Carmona Saez P, Pascual Marqui R D, Tirado F, et al. BMC Bioinformatics, 2006, 78(7): 1212.