k-anonymous message transmission. - Luis von Ahn; Andrew Bortz; Nicholas J. Hopper (CCS, 2003)

CAPTCHA: Using Hard AI Problems for Security. - Luis von Ahn; Manuel Blum 001; Nicholas J. Hopper; John Langford 001 (EUROCRYPT, 2003)

Public Key Steganography. - Luis von Ahn; Nicholas J. Hopper (IACR Cryptol. ePrint Arch., 2003)

Labeling images with a computer game. - Luis von Ahn; Laura Dabbish (CHI, 2004)

Telling humans and computers apart automatically. - Luis von Ahn; Manuel Blum 001; John Langford 001 (Commun. ACM, 2004)

ESP: Labeling Images with a Computer Game. - Luis von Ahn; Laura Dabbish (AAAI Spring Symposium: Knowledge Collection from Volunteer Contributors, 2005)

Covert two-party computation. - Luis von Ahn; Nicholas J. Hopper; John Langford 001 (STOC, 2005)

Improving accessibility of the web with a computer game. - Luis von Ahn; Shiry Ginosar; Mihir Kedia; Ruoran Liu; Manuel Blum 001 (CHI, 2006)

Verbosity: a game for collecting common-sense facts. - Luis von Ahn; Mihir Kedia; Manuel Blum 001 (CHI, 2006)

Peekaboom: a game for locating objects in images. - Luis von Ahn; Ruoran Liu; Manuel Blum 001 (CHI, 2006)

Why do tagging systems work? - George W. Furnas; Caterina Fake; Luis von Ahn; Joshua Schachter; Scott A. Golder; Kevin Fox 002; Marc Davis; Cameron Marlow; Mor Naaman (CHI Extended Abstracts, 2006)

Selectively Traceable Anonymity. - Luis von Ahn; Andrew Bortz; Nicholas J. Hopper; Kevin O'Neill (Privacy Enhancing Technologies, 2006)

Games with a Purpose. - Luis von Ahn (Computer, 2006)

Improving Image Search with PHETCH. - Luis von Ahn; Shiry Ginosar; Mihir Kedia; Manuel Blum 001 (ICASSP (4), 2007)

TagATune: A Game for Music and Sound Annotation. - Edith L. M. Law; Luis von Ahn; Roger B. Dannenberg; Mike Crawford (ISMIR, 2007)

Human Computation. - Luis von Ahn (ICDE, 2008)

Breaking Audio CAPTCHAs. - Jennifer Tam; Jirí Simsa; Sean Hyde; Luis von Ahn (NIPS, 2008)

Designing games with a purpose. - Luis von Ahn; Laura Dabbish (Commun. ACM, 2008)

AI's 10 to Watch. - James A. Hendler; Philipp Cimiano; Dmitri A. Dolgov; Anat Levin; Peter Mika; Brian Milch; Louis-Philippe Morency; Boris Motik; Jennifer Neville; Erik B. Sudderth; Luis von Ahn (IEEE Intell. Syst., 2008)

Matchin: eliciting user preferences with an online game. - Severin Hacker; Luis von Ahn (CHI, 2009)

Input-agreement: a new mechanism for collecting data using human computation games. - Edith Law; Luis von Ahn (CHI, 2009)

Search war: a game for improving web search. - Edith Law; Luis von Ahn; Tom M. Mitchell (KDD Workshop on Human Computation, 2009)

Provably Secure Steganography. - Nicholas J. Hopper; Luis von Ahn; John Langford 001 (IEEE Trans. Computers, 2009)

Word sense disambiguation via human computation. - Nitin Seemakurty; Jonathan Chu; Luis von Ahn; Anthony Tomasic (HCOMP@KDD, 2010)

Three human computation projects. - Luis von Ahn (SIGCSE, 2011)

Book announcement: Human Computation. - Edith Law; Luis von Ahn (SIGecom Exch., 2011)

Human Computation - Edith Law; Luis von Ahn (Morgan & Claypool Publishers, 2011)

Collective Intelligence 2012: Proceedings - Thomas W. Malone; Luis von Ahn (CoRR, 2012)

Duolingo: learn a language for free while helping to translate the web. - Luis von Ahn (IUI, 2013)

Behind the Scenes of Duolingo. - Luis von Ahn; Matthew J. Streeter (EDM, 2015)