The tag 'steiner' is only used once. This is the project:
VCF Steiner 2
VCF Steiner
Adaptation of the original circuit: http://yusynth.net/gear/US1/images/VCF-US1.gif
VCF Steiner
Adaptation of the original circuit: http://yusynth.net/gear/US1/images/VCF-US1.gif