The same way long ones are -- the writer plants their butt in their seat and starts writing, then keeps going until the story is finished.
A writer doesn't have to wrack his brain for ideas for stories. They're always there, begging to be written. The hard part is picking which one you want to work on next and having the determination to finish what you've started.
My Short Stories was created in 2008.
International Short Stories was created in 1910.
Lizard - short stories - was created in 1993.
The Bridge - short stories - was created in 1986.
The Collected Short Stories of Dahl was created in 1991.
Short Stories - Tuxedomoon album - was created in 1983.
Long Story Short was created on 2009-04-15.
Darkness - short stories - was created in 1985.
A Collection of Short Stories - Reload album - was created in 1993.
Short Stories - Harry Chapin album - was created on 1973-12-01.
Short Stories - Elisabeth Andreassen album - was created on 2005-10-17.
Beyond the Missouri Sky - Short Stories - was created on 1997-02-25.