Six volumes include 100 newly authenticated works—but 15 previously attributed to the artist are removed

The case was decided in New York after 11 years of court battles

Our round-up of the latest art publications

“Modigliani – Three Days on the Wing of Madness” has so far received some scathing reviews

The Italian artist's paintings and sculptures were studied ahead of an exhibition at the Barnes Foundation in Philadelphia

Plus, Cecilia Vicuña; 20th-century women artists at Frieze Masters; and Modigliani in Philadelphia

The works were discovered during preparatory forensic analysis for a new exhibition in Philadelphia

Our roundup of the latest art publications

Researchers at C2RMF give an exclusive preview of their forensic study of all the artist's works in French museum collections

A US dealer says he is owed millions by insurance brokers for 12 works that were confiscated by authorities from the Palazzo Ducale in 2017 as suspected fakes

French expert Marc Restellini claims substantial modifications to Italian painter's 1915 portrait of Beatrice Hastings were not mentioned by Christie's when the picture was sold—twice

Institute is claiming copyright ownership and right to publish expert’s research, alongside share of profits from Institut Restellini which it claims charges €30,000 per inquiry

Dealer Oscar Stettiner’s grandson says painting, now owned by David Nahmad, was looted by Nazis

Artistic fraudsters are still pushing their luck—creating works ranging from the barely believable to the downright hilarious

Our pick of highlights from upcoming auctions and fairs

Auction house reports $6.4bn in total sales last year, while chief executive Tad Smith says guarantees are not "at a particularly high level"

Comprehensive analysis of 29 pieces from ten institutions could be “the best weapon against forgery”

How soon is too soon? Private collectors are selling off works as little as a few weeks after lending them to high-profile shows

Sex sells—but only if it is guaranteed

Exhibition at the Albertina Museum in 2020 will “reposition” artist as an avant-garde innovator, organiser says

The work is the largest in the artist's most sought-after series of pathbreaking Modern nudes

A New York State judge’s decision keeps a claim on Seated Man with a Cane alive

Works were exhibited at Palazzo Ducale in July when they were confiscated by the authorities

From Modigliani’s "indecent" nudes to two shows exploring very different relationships

New exhibition will look at artist’s early sculpture and include nude from show once shut down for indecency