In-focus electron microscopy of frozen-hydrated biological samples with a Boersch phase plate.
von Andreas, Walter
Barton, B., Rhinow, D., Walter, A., Schröder, R., Benner, G., Majorovits, E., Niebel, H., Müller, H., Haider, M., Lacher, M., Schmitz, S., Holik, P., Kühlbrandt, W., Ultramicroscopy, 111:1696-1705 (2011)