Räpina paberiveski paberivalmistamise raamide arengust
Utter, Õie
;
Utter, Leo
Insenerikultuur Eestis. 1
1992
/
lk. 179-183
https://www.ester.ee/record=b1063622*est
Räpina paberiveski senitundmatutest vesimärkidest
Utter, Leo
;
Utter, Õie
Insenerikultuur Eestis. 2
1995
/
lk. 186-200: ill
https://www.ester.ee/record=b1063622*est
Wet oxidation of paper mill evaporation concentrates
Roosalu, Kati
;
Verenich, Svetlana
;
Kallas, Juha
International conference EcoBalt 2003 : Riga, Latvia, 2003 : book of abstracts. Volume 1
2003
/
p. I-27 - I-28
https://lutpub.lut.fi/handle/10024/35063?show=full