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, Q: stands for reviewer's Question or Comment. R: stands for authors' response

, Q: Reviewed paper deals with an interval observer which is synthesized for fractional linear systems with additive noise and disturbances. Some corrections are necessary. R: The reviewer is gratefully acknowledged for his careful reading, encouragements, and guidance for improving the manuscript

, definition of binomial coefficients in form of factorial (2) cannot be used, it is valid only for integer number, not real one, rather use definition by Gamma function. R1: Since j is an integer, the presented definition of Newton binomial is correct. The 470 authors do not use factorial of ?. The definition of Newton's binomial exists and is an alternative for the previous version of equation (2). As suggested by the reviewer, the two definitions of Newton, Q1. Since order ? is real, defined in (1)

, Laplace transform (3) is valid for all kind of definitions, but only for zero initial 475 conditions. R2: The reviewer is completely right, Q2

, )) is called Grünwald-Letnikov, Q3. approximation

, R3: The authors agree fully with the reviewer and the sentence pointed out has been modified. Check the sentence in red

. Q4 and . Fig, ) legend is not readable, check also other figures. R4: As suggested by the reviewer

, Example 1: why you use different notation for fractional derivative in (40) than notation in (4)? R5: As advised by the reviewer, a unique notation of fractional derivative is now used in equations (4) and (40), Q5

, Q6. check References