Letter-deletion procedure: a flexible way of reducing the text redundancy for cloze testsKokkota, ValmarIII Regional Seminar "Theoretical Problems of Language Testing", Tallinn, February 16-17, 1988 : summaries1988 / p. 51-53 : ill https://www.ester.ee/record=b1238663*est

Standardization of English achievement test series ATUEinväli, E.; Kokkota, Valmar; Toomsalu, Marju; Truu, Sirje; Tšetõrkina, Ene; Volgina, Olga; Võrk, Evi-MaiIII Regional Seminar "Theoretical Problems of Language Testing", Tallinn, February 16-17, 1988 : summaries1988 / p. 31-34 https://www.ester.ee/record=b1238663*est

The role of semantic ties in cloze-type item-solving strategyKokkota, ValmarIII Regional Seminar "Theoretical Problems of Language Testing", Tallinn, February 16-17, 1988 : summaries1988 / p. 54-56 https://www.ester.ee/record=b1238663*est