TY - JOUR T1 - Assistive Navigation of a Robotic Wheelchair using a Multihierarchical Model of the Environment A1 - Fernández-Madrigal, Juan-Antonio A1 - Galindo, Cipriano A1 - Gonzalez-Jimenez, Javier JA - Integrated Computer-Aided Engineering Y1 - 2004 VL - 11 IS - 4 SP - 309 EP - 322 UR - http://iospress.metapress.com/content/y1fdufkd68jh33gc/ M2 - doi: 10.3233/ICA-2004-11402 M1 - img_url= M1 - rank_indexname=JCR-2004 M1 - rank_pos_in_category=54 M1 - rank_num_in_category=65 M1 - rank_cat_name=Computer%20Science%2C%20Multidisciplinary M1 - impact_factor=0.148 ER -