In poetry Rolf Jacobsen's "Nattåpent" sold almost 20,000 copies and Harald Sverdrup's "Lysets øyeblikk" was also very well received. Stein Mehren, Tor Ulven and Paal-Helge Haugen also published significant collections of poetry during this decade. Jan Erik Vold wrote some of his most political poetry, reminiscent of the 1970s, during the 1990s. The new and emerging poetry shows great diversity. However, only the rare collection of poetry achieves substantial sales or circulation. Poetry can be said to be in a crisis state, unlike newer novels, which often are published in large quantities as the month's book for book clubs.