Ice Warriors: Key of Midgard is now available in paperback format on Amazon and Lulu. Both of these are print-on-demand services. Unfortunately, because printing is quite expensive, the physical books are a lot more than the Kindle versions. You can, however, get the Kindle app on both the phone and the laptop.
Please do help me spread the word by sharing and, where possible, leaving a rating and even a review on one of these sites, or even on Goodreads.