European Large LakesTiina Nõges, Reiner Eckmann, Külli Kangur, Peeter Nõges, Anu Reinart, Gulnara Roll, Heikki Simola, Markku Viljanen · First published 2010Open the Tome
Development and implementation of an intereated programme for environmental monitoring of Lake Ladoga (DIMPLA)Markku Viljanen · First published 2000Open the Tome
Proceedings of a workshop on environmental data systems for large lakesTapani Säynätkari, Markku Viljanen · First published 1999Open the Tome
Report on Lake Ladoga research in 1991-1993Markku Viljanen, V. G. Drabkova, N. N. Filatov · First published 1994Open the Tome
Tietokoneohjelmisto kalaston populaatiobiologisten aineistojen sekä kalastustietojen käsittelyynMarkku Viljanen · First published 1985Open the Tome
Pyhäselän kalatalous, kalasto V. 1975-1981 ja niihin vaikuttaneet tekijatMarkku Viljanen · First published 1982Open the Tome
