An Efficient Insertion-Only Error-Corrector for LL(1) Parsers. - Charles N. Fischer; D. R. Milton; S. B. Quiring (POPL, 1977)

Efficient LL(1) Error Correction and Recovery Using Only Insertions. - Charles N. Fischer; D. R. Milton; S. B. Quiring (Acta Informatica, 1980)