USE OF MICROBEADS FOR THE DETECTION OF BINDING SITES ON THE HUMAN ZONA PELLUCIDA: A SCANNING ELECTRON MICROSCOPY (SEM) ASSAY СтатьяMichelmann H.W., Topfer-Petersen E., Schwartz P., Gratz G., Magerkurth C.Andrologia. Том 33. 2001. С. 266-271