F (2006)

Learning K programming: idiom by idiom [pdf]

K Isn't Lisp (2004)

ksql

No Stinking Loops

Learning K Programming, Idiom by Idiom (2019)

Concatenative K

F (2006)

What is a number that man may know it, and man that he may know a number? (1960)

Stages of denial in encountering K

K Language: Remarks on Style (1995)

A Conversation with Manfred von Thun (RIP) (2003)

The Origins of J

F – a pure functional concatenative language (2006)

A Conversation with Manfred von Thun (creator of Joy)

The Concatenative Language XY (2004)