1. Schwaber
K.
& Sutherland
J. (2020). The Scrum Guide. Scrum.org.
Page 9
"Sprint Planning" section: "The Developers select items from the Product Backlog to include in the current Sprint... Through discussion with the Product Owner
the Developers select items from the Product Backlog to include in the current Sprint. The Scrum Team may refine these items during this process
which increases understanding and confidence. Selecting how much can be completed within a Sprint may be challenging. However
the more the Developers know about their past performance
their upcoming capacity
and their Definition of Done
the more confident they will be in their Sprint forecasts."
Page 10
"Sprint Backlog" section: "The Sprint Backlog is a plan by and for the Developers... It is updated throughout the Sprint as more is learned. It should have enough detail that they can inspect their progress in the Daily Scrum."
2. Stray
V.
Sjøberg
D. I.
& Dybå
T. (2016). The daily stand-up meeting: A grounded theory study. Journal of Systems and Software
114
101-124. https://doi.org/10.1016/j.jss.2016.01.004
Section 4.1.1
"Planning the day": This study reinforces that detailed planning is an ongoing
daily activity
not a one-time event in Sprint Planning. The Sprint Backlog created in planning is a starting point
"The team members created a plan for the next 24 hours... This plan was often a refinement of the overall sprint plan." This supports the idea that the initial plan is not exhaustive.