Shashkina MIa; Shashkin PN; Sergeev AV (October 2006). "[Chemical and medicobiological properties of Chaga (review)]". Farmatsevtychnyĭ zhurnal40 (10): 560–568. doi:10.1007/s11094-006-0194-4.
"A phase I/II trial of a polysaccharide extract from Grifola frondosa (Maitake mushroom) in breast cancer patients: immunological effects". Journal of Cancer Research and Clinical Oncology135 (9): 1215–21. September 2009. doi:10.1007/s00432-009-0562-z. பப்மெட்:19253021.
"A phase I/II trial of a polysaccharide extract from Grifola frondosa (Maitake mushroom) in breast cancer patients: immunological effects". Journal of Cancer Research and Clinical Oncology135 (9): 1215–21. September 2009. doi:10.1007/s00432-009-0562-z. பப்மெட்:19253021.