"Socialism is an economic system characterised by social ownership of the means of 
production and co-operative management of the economy. "Social ownership" may refer to cooperative enterprises, common ownership, state ownership, citizen ownership of equity, or any combination of these."

Wikipedia Socialism ebook. Selected articles from Wikipedia related to Socialism in .epub format. 

This book is part of the radical seed collection; and for independent researchers
looking to followup the citations and further readings, you can find most of them in the radical seed (https://thepiratebay.ee/torrent/9389639/Op_Radical_Seed).

Selected Wikipedia Articles:

- Socialism

Development of Socialism
- History of socialism
- Socialist calculation debate
- Socialist economics

Ideas of Socialism
- Calculation in kind
- Cooperative
- Common ownership
- Economic democracy
- Economic planning
- Equal opportunity
- Free association
- Labour voucher
- Material balance planning
- Social peer-to-peer processes
- Production for use
- Public ownership
- Workers' self-management
- Social dividend
- Socialization
- To each according to his contribution
- Workplace democracy

Models of Socialism
- Decentralized planning
- Participatory economics
- Market socialism
- Lange model
- Mutualism
- Planned economy
- Analysis of Soviet-type economic planning
- Project Cybersyn
- Socialist market economy
- Socialist-orientated market economy

Variants of Socialism
- Agrarian socialism
- Social anarchism
- Democratic socialism
- Ethical socialism
- Eco-socialism
- Guild socialism
- Impossibilism
- Liberal socialism
- Socialism (Marxism)
- Socialism in One Country
- Owenism
- Reformism
- Religious socialism
- Revisionism (Marxism)
- Revolutionary socialism
- Ricardian socialism
- Scientific socialism
- Social democracy
- State socialism
- Syndicalism
- Utopian socialism
- Labor Zionism
- Socialism of the 21st century

Socialists
- Charles Hall
- Saint-Simon
- Robert Owen
- Charles Fourier
- William Thompson
- Thomas Hodgskin
- Louis Blanc
- Moses Hess
- Karl Marx
- Friedrich Engels
- Ferdinand Lassalle
- William Morris
- Mary Harris Jones
- Eugene V. Debs
- Ben Tillett
- John Dewey
- Enrico Barone
- Fred M. Taylor
- Oskar R. Lange
- Abba P. Lerner
- Edvard Kardelj
- Robin Hahnel
- Michael Albert
- Ernest Mandel
- Branko Horvat
- Jaroslav Vanek
- Pat Devine
- John Roemer
- Vladimir Lenin

Socialist Organizations
- International Workingmen's Association
- Second International
- Comintern
- Fourth International
- Fifth International
- Socialist International
- World Federation of Democratic Youth
- International Union of Socialist Youth
- World Socialist Movement