Question: What was the pen named used for the series Wheel of Time, which includes the book Winter's Heart?

Context paragraphs:
Gaushala Bazar: Gaushala Bazar is the second largest business center in the Mahottari district of Nepal.  The animal market of the place is well known.  Gaushala is a variation of Goshala, a Sanskrit word that means the house of Cow.  There is a huge cattle pen named Gaushala containing more than one hundred cows.  It is protected by the government of Nepal.

HP 7470: The HP 7470 was a small low-cost desktop pen plotter introduced by Hewlett Packard's San Diego division.  It used a revolutionary "grit wheel" design which moved the paper held in place by a wheel with embedded grit and a pinch roller.  The HP 7470 had only two pens, one on either side.  It was much less expensive than the previous flatbed design.  It was very heavy but had 4 pens.  The HP 7475 used a rotating carousel with six pens.  That plotter was used in greeting card kiosks.  This design was also scaled up for very large pen plotters.  These were driven by the HP-GL plotter language which used ASCII commands such as PA 300, 4500;PD;

Parker Jointless: The Parker Jointless "Lucky Curve" is a range of fountain pens released by the Parker Pen Company in 1898.  The pen used the Lucky Curve ink supply system, designed to draw ink even when the pen was not in use, which was invented and patented by George Safford Parker in 1894.  The pen was named "Jointless" because of its one-piece ink barrel, designed to prevent leakage, an innovation at the time – though the design made the refilling process messy.  The pen was Parker's first to be advertised outside the United States.  The American government purchased the pens in large quantities and a Parker Jointless was one of the pens used to sign the Spanish–American Treaty of Paris in 1898.

The Wheel of Time: The Wheel of Time is a series of high fantasy novels written by American author James Oliver Rigney, Jr. under his pen name of Robert Jordan.  Originally planned as a six-book series, "The Wheel of Time" spanned fourteen volumes, in addition to a prequel novel and a companion book.  Jordan began writing the first volume, "The Eye of the World", in 1984, and it was published in January, 1990.

The Path of Daggers: The Path of Daggers is a fantasy novel by American author Robert Jordan, the eighth book of his series "The Wheel of Time".  It was published by Tor Books and released on October 20, 1998.  Upon its release, it immediately rose to the #1 position on the "New York Times" hardcover fiction bestseller list, making it the first "Wheel of Time" book to reach the #1 position on that list.  It remained on the list for the next two months.  This book is the shortest book in the main Wheel of Time series, consisting of a prologue and 31 chapters.

Winter's Heart: Winter's Heart a fantasy novel by American author Robert Jordan, the ninth book of his series "Wheel of Time".  It was published by Tor Books and released on November 7, 2000.  Upon its release, it immediately rose to the #1 position on the "New York Times" hardcover fiction bestseller list, making it the second "Wheel of Time" book to reach the #1 position on that list.  It remained on the list for the next two months.  "Winter's Heart" consists of a prologue and 35 chapters.

Pedrail wheel: The pedrail wheel is a type of wheel developed in the early 20th century for all-terrain locomotion.  They consist of a series of "feet" ("pedes" in Latin) connected to pivots on a wheel.  As the wheel turns, the feet come into contact with the ground, and rotate so they remain flat to the ground as the wheel moves over them.  Pedrail wheels may be simple systems with the feet connected to a rigid wheel, but more complex systems including various built-in suspension systems were designed to improve performance on uneven ground.  The system was used in agricultural machinery.

Wandering Stars: Wandering Stars is an anthology of Jewish fantasy and science fiction, edited by American writer Jack Dann, originally published by Harper & Row in 1974.  It represented, according to the book cover, "the first time in science fiction that the Jew - and the richness of his themes and particular points of view -- will appear without a mask."  In his introduction, "Why Me?" , Isaac Asimov discussed how many Jewish science fiction writers prior to that time had used gentile pen names in order to get published: "Many of the Jewish pulp writers, however, used pen names as a matter of sound business.  A story entitled "War Gods of the Oyster-Men of Deneb" did not carry conviction if it was written by someone named Chaim Itzkowitz."  He then goes on to discuss the pen names of various Jewish writers included in this book.  "Wandering Stars" is therefore of historical significance as the first science fiction anthology where Jewish writers openly identified themselves as such.  It was followed by a second anthology, "More Wandering Stars", also edited by Jack Dann, published by Doubleday in 1981.

Lucius Licinius Lucullus: Lucius Licinius Lucullus was the named used by men of gens Licinia in Ancient Rome.  They came from the "Licinii Luculli", in which the most famous member was the consul in 74 BC and conqueror of Mithridates VI of Pontus.

Balance wheel: A balance wheel, or balance, is the timekeeping device used in mechanical watches and some clocks, analogous to the pendulum in a pendulum clock.  It is a weighted wheel that rotates back and forth, being returned toward its center position by a spiral torsion spring, the balance spring or hairspring.  It is driven by the escapement, which transforms the rotating motion of the watch gear train into impulses delivered to the balance wheel.  Each swing of the wheel (called a 'tick' or 'beat') allows the gear train to advance a set amount, moving the hands forward.  The balance wheel and hairspring together form a harmonic oscillator, which due to resonance oscillates preferentially at a certain rate, its resonant frequency or 'beat', and resists oscillating at other rates.  The combination of the mass of the balance wheel and the elasticity of the spring keep the time between each oscillation or ‘tick’ very constant, accounting for its near universal use as the timekeeper in mechanical watches to the present.  From its invention in the 14th century until tuning fork and quartz movements became available in the 1960s, virtually every portable timekeeping device used some form of balance wheel.

Supporting paragraphs: Winter's Heart The Wheel of Time
Answer: Winter's Heart a fantasy novel by American author Robert Jordan, the ninth book of his series "Wheel of Time".