Tell me which nouns have wrong articles in the following text:

From the ancient times humanity has been fascinated by the sping properties of helicenes.
Helicenes look like springs and behave like them: flexibility of various helicenes was observed experimentally [NAME_1, NAME_2, NAME_3]. If we consider only a subset of unsubstituted carbohelicenes, there is a number of works where helicene spring constants were calculated theoretically [Руличек07, NAME_4, NAME_5].
There aren’t many works which looked into the change of the spring properties with the helicene size and those which did are in some sort of a disagreement. NAME_6 at. NAME_7 observed the lowest vibrational modes, and came to the conclusion of “decreasing elasticity of the growing helical structure (i.e., increasing force constant k…)” [Руличек07], but the semi-empirical calculations of NAME_8 at NAME_7. [NAME_4] showed a force constant decrease. In the work of NAME_9 at. NAME_7 [NAME_2] a pi-extended [9]helicene has a much larger force constant than a pi-extended [7]helicene.
The behavior of an ideal spring is described by Hooke’s law:
F = -kx
If helicenes behave like classical springs, then the constant should linearly decrease with the increase of length/number of coils.
In this work we aim to find a method suitable for a description of helicene geometry and use it to investigate the change of the spring properties with the increase of n in [n]helicenes and to determine how well the springs’ behavior follows the Hooke’s law. Write your response using less than 550 words.
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