Janusz Tyburcy Jerzy Surma Janusz Tyburcy A Study on Competence-Preserving Case Replacing Strategies in Case-Based Reasoning. 233-238 1998 conf/ewcbr/1998 EWCBR https://doi.org/10.1007/BFb0056336 db/conf/ewcbr/ewcbr1998.html#SurmaT98 Jerzy Surma