Lois Bloom, Patsy Lightbown, Lois Hood, Melissa Bowerman, Michael Maratsos, Michael P. Maratsos, Structure and Variation in Child Language, Monographs of the Society for Research in Child Development, Vol. 40, No. 2, Structure and Variation in Child Language (May, 1975), pp. 1-97
Stored only when both papers are in the corpus — 461 citations exist upstream.