SPEL - System for Phonic Early Learning. - Linda Snape (INTERACT, 1999)

A computer based letter formation system for children. - Tony Nicol; Linda Snape (IDC, 2003)

Evaluating the effectiveness of a computer based letter formation system for children. - Linda Snape; Tony Nicol (IDC, 2003)

Phonics for young children: a computer based approach. - Linda Snape; Tony Nicol; Stuart MacFarlane (IDC, 2003)