Naatan Kvarki raamaturiiulAgur, UstusHorisont1976 / lk. 31-32 https://www.ester.ee/record=b1072243*est http://www.digar.ee/id/nlib-digar:291327 https://www.ester.ee/record=b1303597*est https://www.ester.ee/record=b1328000*est https://www.ester.ee/record=b1285018*est https://www.ester.ee/record=b1318383*est https://www.ester.ee/record=b1332516*est https://www.ester.ee/record=b1175583*est https://www.ester.ee/record=b1330526*est

Naatan Kvarki raamaturiiulAgur, UstusHorisont1973 / lk. 41-42 https://www.ester.ee/record=b1072243*est http://www.digar.ee/id/nlib-digar:291289 https://www.ester.ee/record=b1384300*est https://www.ester.ee/record=b1318610*est https://www.ester.ee/record=b1348636*est https://www.ester.ee/record=b1351080*est https://www.ester.ee/record=b1169920*est

Naatan Kvarki raamaturiiulAgur, UstusHorisont1972 / lk. 42-43 https://www.ester.ee/record=b1072243*est http://www.digar.ee/id/nlib-digar:291288