@article{UNY29996,
          author = {Suciati Suciati and Puspita Puspita},
           title = {USING VARIATION TECHNIQUES OF CONCEPT CORRELATION IN THE
PROBLEM BASED LEARNING MODEL TOWARD STUDENTS? ACHIEVEMENT},
         journal = {Proceeding of International Conference On Research, Implementation And Education Of Mathematics And Sciences 2015},
       publisher = {Faculty of Mathematics and Natural Sciences Yogyakarta State University},
             url = {http://eprints.uny.ac.id/29996/}
}