A. Blaho, I. Kalas, and P. Tomcsanyi, Open Logo ? A New Implementation Of Logo, Proceedings of EuroLogo 99, 1999.

A. Blaho, I. Kalas, and M. Matusova, Environment For Environments: A New Metaphore For Logo Exploring A New Partnership: Children, Teachers And Technology, 1994.

E. Sendova and I. Ivanov, Lifting the hood to see how something works, 2000.

A. Blaho and I. Kalas, ) I Beg Your Pardon Turtles: Don't Forget About Data Structures, Proceedings of EuroLogo 97, 1997.

A. Blaho and I. , Kalas are senior lecturers at Comenius University, They are the authors of SuperLogo