Angenete, Eva, et al. “Preoperative Radiotherapy and Extracellular Matrix Remodeling in Rectal Mucosa and Tumour Matrix Metalloproteinases and Plasminogen Components”. Acta Oncologica, vol. 48, no. 8, Jan. 2009, pp. 1144-51, doi:10.3109/02841860903150510.