@misc{indiciae9e1a2bb8607d, title = {Visuospatial problem solving, conceptual reasoning and sorting behaviour in multiple sclerosis out-patients.}, author = {A Jennekens-Schinkel and E A van der Velde and E A Sanders and J B Lanser}, year = {1989}, doi = {10.1016/0022-510x(89)90101-9}, url = {https://pubmed.ncbi.nlm.nih.gov/2723683/}, note = {Source identifier: 2723683} }