OLKHOVSKY, R. M.; SOLNTSEV, I. V.; OSOKIN, N. A. Grenning J. Planning Poker or How to Avoid Analysis Paralysis While Release Planning. Hawthorn Woods: Renaissance Software Consulting. 2002. Т. 3. С. 22-23. ГС 2018, 20 (4), 34-39. https://doi.org/10.22394/2070-8378-2018-20-4-34-39.