1. Ashley DJB (1978) Evans’ histological appearances of tumours. Churchill Livingstone, Edinburgh
2. Bales CE, Durfee GR (1979) Cytologic techniques. In: Koss LG (ed) Diagnostic cytology and its histopathologic bases. Toronto JB Lippincott Company Philadelphia, pp 1187–1266
3. Birbeck MSC, Wheatley DN (1965) An electron microscopic study of the invasion of ascites tumor cells into the abdominal wall. Cancer Res 25:490–497
4. Buck RC (1973) Walker 256 tumor implantation in normal and injured peritoneum studied by electron microscopy, scanning electron microscopy, and autoradiography. Cancer Res 33:3181–3188
5. Carr J, Carr I, Dreher B, Betts K (1980) Lymphatic metastasis: invasion of lymphatic vessels and efflux of tumour cells in the afferent popliteal lymph as seen in the Walker rat carcinoma. J Pathol 132:287–305