Felitsyn, Morad 2002
Felitsyn S., Morad S. REE patterns in latest Neoproterozoic-early Cambrian phosphate concretions and associated organic matter // Chem. Geol. 2002. V. 187. P. 257-265.
Felitsyn S., Morad S. REE patterns in latest Neoproterozoic-early Cambrian phosphate concretions and associated organic matter // Chem. Geol. 2002. V. 187. P. 257-265.