Article 02: Bilingual Knowledge Maps (BiK-Maps) in Second-Language Vocabulary Learning.

2 Bilingual Knowledge Maps (BiK-Maps) in Second-Language Vocabulary Learning.
 (article)

Bahr, G. S. and D. F. Dansereau The Journal of Experimental Education, 2001, 70 (1), 5-24.
ERIC has an abstract for this article, but not a free download.

The paper reports that in tests 'bilingual BiK map' learners of vocabulary outscore 'bilingual list' learners of vocabulary.
I'd go further to say that the maps present perfect structures for embedding the rest of the language of the content areas, verbs, prepositions, etc. This is hinted at with the coding system suggested, which is nice in itself, but the language outside the vocabulary is not explicitly expanded.