English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A translation of Paul Ehrenfest's 1933 paper, entitled "Phase transitions inthe usual and generalized sense, classified according to the singularities ofthe thermodynamic potential" is presented. Some historical commentary about thepaper's context is also given.

the european physical journal. special topics

A Look Back at the Ehrenfest Classification. Translation and Commentary  of Ehrenfest's 1933 paper introducing the notion of phase transitions of  different order