B. Horton, Integrating Logo into the Secondary Mathematics Curriculum, Proceedings of LOGO and Mathematics Education Conference, 1991.

A. I. Sacristan, Exploring infinite processes through Logo programming activities of recursive and fractal figures, EUROLOGO Conference, vol.10, 2005.

N. Park, J. Kwak, S. Kim, D. Won, and H. Kim, WIPI Mobile Platform with Secure Service for Mobile RFID Network Environment, LNCS, vol.3842, pp.741-748, 2006.
DOI : 10.1007/11610496_100

N. Park, Security Scheme for Managing a Large Quantity of Individual Information in RFID Environment, ICICA 2010. CCIS, pp.72-79, 2010.
DOI : 10.1007/11424826_122

N. Park, Secure UHF/HF Dual-Band RFID : Strategic Framework Approaches and Application Solutions, ICCCI 2011, 2011.
DOI : 10.1007/978-3-642-23935-9_48
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.476.2050

N. Park, Implementation of terminal middleware platform for mobile RFID computing, International Journal of Ad Hoc and Ubiquitous Computing, vol.8, issue.4, pp.205-219, 2011.
DOI : 10.1504/IJAHUC.2011.043583

E. Toenisson, Programming language LOGO in school mathematics and teacher training, Proceedings of PME Conference, 1997.

K. Freiermuth, J. Hromkovic, and B. Steffen, Creating and Testing Textbooks for Secondary Schools -An Example: Programming in LOGO, Lecture Notes in Computer Science, issue.5090, 2008.

N. Park and Y. Kim, Harmful Adult Multimedia Contents Filtering Method in Mobile RFID Service Environment, ICCCI 2010, pp.193-202, 2010.
DOI : 10.1007/978-3-642-16732-4_21

N. Park, Customized Healthcare Infrastructure Using Privacy Weight Level Based on Smart Device, Communications in Computer and Information Science, vol.206, pp.467-474, 2011.
DOI : 10.1007/11424826_122

N. Park, Secure Data Access Control Scheme Using Type-Based Reencryption in Cloud Environment, Studies in Computational Intelligence, vol.381, pp.319-327, 2011.
DOI : 10.1007/978-3-642-23418-7_28

N. Park and Y. Song, Secure RFID Application Data Management Using All-Or-Nothing Transform Encryption, WASA 2010, pp.245-252, 2010.
DOI : 10.1007/978-3-642-14654-1_30

N. Park, The Implementation of Open Embedded S/W Platform for Secure Mobile RFID Reader, The Journal of Korea Information and Communications Society, vol.35, issue.5, pp.785-793, 2010.